Note: We are presenting raw data. To analyze the data, we encourage users to read the entire study and the methodology used. Sample size, question wording, and question order can all affect the results and reliability of the findings. Context and timing may also influence responses, for example, if the survey is conducted during a war.

Do you think that taking down the regime would be more likely to open the door to Middle East peace by destroying the chief sponsor of terrorism in the region or more likely to lead to chaos and instability? (Harvard CAPS-Harris Poll, January 28-29, 2026)


More likely to open the door to Middle East peace	53%
More likely to lead to chaos and instability	47%

Do you think that the Iranian people now support the Iranian regime run by the Ayatollah or do they not support that regime? (Harvard CAPS-Harris Poll, January 28-29, 2026)


Support	33%
Do not support	67%

Do you think that the US should support or not regime change in Iran? (Harvard CAPS-Harris Poll, January 28-29, 2026)


Support regime change	59%
Not support regime change	41%

Given that the Iranian regime has gunned down thousands of protesting Iranians, should the US launch some kind of missile or air strike in retaliation or not undertake that? (Harvard CAPS-Harris Poll, January 28-29, 2026)


Launch strike	29%
Should not do that	71%

Do you think Iran has lost its nuclear capability or is rebuilding its nuclear capability? (Harvard CAPS-Harris Poll, December 2-4, 2025, January 28-29, 2026)

	December 2025	January 2026
Lost its nuclear capability	31%	30%
Rebuilding its nuclear capability	69%	70%

Do you think it is in the U.S.' interests or not to stop Iran from obtaining a nuclear weapon? (Harvard CAPS-Harris Poll, January 28-29, 2026)


In the U.S.' interests	76%
Not in the U.S.' interests	24%

Which, if any, of the following do you think the U.S. should take military action in? [Iran] (Politico, January 2026)


The U.S. should take military action here	31%
The U.S. should not take military action here	45%
DK	4%

Do you think Iran has lost its nuclear capability or is rebuilding its nuclear capability? (Harvard CAPS-Harris Poll, December 2-4, 2025)

	2025
Lost its nuclear capability	31%
Rebuilding its nuclear capability	69%

Do you approve or disapprove the US military's targeted airstrike against Iran's nuclear facilities this past summer by the Pentagon? (Reagan Institute, October 23 - November 3, 2025)

	2025
Approve	60%
Disapprove	36%
DK	4%

Do you see Iran as a strong ally, something of an ally, something of an enemy, or a strong enemy? (Reagan Institute, October 23 - November 3, 2025)

	2025
Ally	17%
Enemy	77%
DK	6

Do you support or oppose Instituting economic sanctions to preventing Iran from developing nuclear weapons? (Reagan Institute, October 23 - November 3, 2025)

	2025
Support	73%
Oppose	18%
DK	9%

Do you support or oppose renegotiating the Iran nuclear agreement to preventing Iran from developing nuclear weapons? (Reagan Institute, October 23 - November 3, 2025)

	2025
Support	66%
Oppose	23%
DK	11%

Do you support or oppose Israeli airstrikes against Iran's nuclear sites to preventing Iran from developing nuclear weapons? (Reagan Institute, October 23 - November 3, 2025)

	2025
Support	54%
Oppose	34%
DK	12%

Do you support or oppose the imposition of new sanctions on Iran for its failure to give up its ambition to have nuclear weapons? (Harvard CAPS-Harris Poll, August 20-21, 2025)

	2025
Support	75%
Oppose	25%

In the Israel-Iran conflict do you support Israel more or Iran more? (Harvard CAPS-Harris Poll, August 20-21, 2025)

	August	October
Israel	78%	79%
Iran	22%	21%

How concerned are you that the recent war between Israel and Iran will lead to a terrorist attack on the United States? (Rasmussen, June 25-29, 2025)

	2025
Concerned	76%
Not concerned	20%

At this time, would you support or oppose the U.S. military launching airstrikes against Iran over its nuclear program? (Washington Post, June 18, 2025)

	2025
Support	25%
Oppose	45%
Unsure	30%

How concerned, if at all, are you about the possibility of the U.S. getting involved in a full-scale war with Iran? (Washington Post, June 18, 2025)

	2025
Very	39%
Somewhat	43%
Not so	12%
Not at all	6%

How serious a threat do you think Iran’s nuclear program poses to the U.S.? (Washington Post, June 18, 2025)

	2025
An immediate and serious threat	22%
A somewhat serious threat	48%
A minor threat	23%
Not a threat	7%

How much have you heard about Israel launching airstrikes against Iran over Iran’s nuclear program and Iran retaliating? (Washington Post, June 18, 2025)

	2025
A great deal	31%
A good amount	39%
Little or nothing	30%

Do you think Iran poses a realnational security threat to the United States? (Fox News Poll, June 13-16, 2025)

	2025
Yes	73%
No	24%
DK/NA	3%

Do you approve or disapprove of Israel’s decision to launch militarystrikes against Iran’s nuclear facilities? (Fox News Poll, June 13-16, 2025)

	2025
Approve	49%
Disapprove	46%
DK/NA	5%

Do you think Israel’s strikes against Iran’s nuclear program will make theworld a safer place or a more dangerous place? (Fox News Poll, June 13-16, 2025)

	2025
More dangerous	59%
Safer	36%
DK/NA	5%

Do you think the U.S. military should get involved in the conflict between Israel and Iran? (Economist/YouGov Poll, June 13-16, 2025)

	2025
Yes	16%
No	60%
Unsure	24%

Do you think the United States should or should not engage in negotiations with Iran over its nuclear program? (Economist/YouGov Poll, June 13-16, 2025)

	2025
Should	56%
Should not	18%
Unsure	25%

How serious of a threat does Iran developing nuclear weapons pose to the security of the United States? (ICC / Schoen Cooperman, June 11-13, 2025)

	2025
Serious threat	82%
Not important	8%
DK	10%

How important is it to prevent Iran from developing nuclear weapons? (ICC / Schoen Cooperman, June 11-13, 2025)

	2025
Important	83%
Not important	8%
DK	9%

From what you know, do you support or oppose Israel’s actions in this latest round of hostilities? (ICC / Schoen Cooperman, June 11-13, 2025)

	2025
Support	57%
Oppose	28%
DK	15%

Do you agree or disagree that the United States should support Israel’s efforts to dismantle Iran’s nuclear program? (ICC / Schoen Cooperman, June 11-13, 2025)

	2025
Agree	55%
Disagree	24%
DK	21%

Who do you think has higher moral ground in the war between Israel and Iran? (JCFA, June 13-15, 2025)

	2025
Israel	31%
Iran	13%
Neither side	18%
Both sides equally	18%
Don’t know / unsure	18%
NA	2%

Should the United States intervene militarily in the war? (JCFA, June 13-15, 2025)

	2025
No, unconditionally	45%
Yes, but only if American interests are harmed	24%
Yes, but only as a last resort after exhausting diplomatic options	20%
Yes, unconditionally	11%

To what extent do you agree that Iran with nuclear weapons poses a serious threat to the U.S.? (JCFA, June 13-15, 2025)

	2025
Strongly agree	36%
Agree	29%
Neutral	24%
Disagree	6%
Strongly disagree	5%

To what extent do agree that Israel’s attack on Iran was justified? (JCFA, June 13-15, 2025)

	2025
Strongly agree	21%
Agree	15%
Neutral	39%
Disagree	13%
Strongly disagree	12%

To what extent do agree that Iran’s response against Israel was justified? (JCFA, June 13-15, 2025)

	2025
Strongly agree	14%
Agree	21%
Neutral	46%
Disagree	10%
Strongly disagree	9%

Should Iran be allowed to obtain a nuclear weapon or not? (Harvard CAPS/Harris Poll, June 11-12, 2025)

	2025
Allowed	85%
Not allowed	15%

Would you support or oppose taking out Iran’s nuclear weapons operation with a military operation? (Harvard CAPS/Harris Poll, June 11-12, 2025)

	2025
Support	54%
Oppose	46%

If no acceptable deal with Iran is reached over its nuclear weapons, should the administration support or oppose an Israeli effort to take out Iran's nuclear weapons program? (Harvard CAPS/Harris Poll, June 11-12, 2025)

	2025
Support	60%
Oppose	40%

Should the United States accept a deal where Iran doesn't give up its nuclear enrichment capabilities, allowing it to resume its efforts to build nuclear weapons anytime, or should this be a precondition for any deal? (Harvard CAPS/Harris Poll, June 11-12, 2025)

	2025
Giving up nuclear enrichment should be a precondition	74%
Accept a deal where Iran doesn't give up nuclear enrichment	26%

Do you support or oppose President Trump opening negotiations with Iran directly over their nuclear weapons? (Harvard CAPS/Harris Poll, June 11-12, 2025)

	2025
Support	60%
Oppose	40%

Do you think that these negotiations between the U.S. and Iran will lead to a good deal, a bad deal, or no deal at all? (Harvard CAPS/Harris Poll, June 11-12, 2025)

	2025
Good deal	32%
Bad deal	23%
No deal at all	45%

How much do you think preventing Iran from obtaining a nuclear weapon matters to US security and prosperity? (Reagan Institute, May 27-June 2, 2025).

	2025
Great deal / somewhat	84%
Not	12%
DK / NA	4%

Would you approve or disapprove of negotiating a nuclear deal with Iran that would be designed to prevent Iran from developing nuclear weapons in exchange for easing economic sanctions on the regime? (Reagan Institute, May 27-June 2, 2025).

	2025
Approve	66%
Disapprove	20%
DK / NA	14%

If diplomatic efforts with Iran fail, would you support or oppose Israel conducting targeted airstrikes against Iran's nuclear facilities? (Reagan Institute, May 27-June 2, 2025).

	2025
Support	45%
Oppose	37%
DK / NA	18%

How concerned are you that Iran may be developing a nuclear weapon? (Rasmussen, M ay 19-21)

	2025
Concerned	77%
Not concerned	18%
Not sure	5%

In his dealings with Iran, has President Trump been too aggressive, not aggressive enough, or has his response been about right? (Rasmussen, M ay 19-21)

	2025
Too aggressive	26%
Not aggressive enough	26%
His response has been about right	33%
Not sure	15%

Would you support or oppose military action by the United States to destroy Iran’s nuclear weapons program? (Rasmussen, M ay 19-21)

	2025
Support	57%
Oppose	30%
Not sure	13%

In your view, was the previous U.S.-Iran Nuclear deal negotiated by the Obama administration in 2016 successful or not? (Harvard CAPS/Harris Poll, April 9-10, 2025)

	2025
Successful	30%
Not successful	39%
Unsure/ Don't Know	31%

Do you think that the nuclear weapons facilities of Iran should be destroyed or should they not be destroyed? (Harvard CAPS/Harris Poll, April 9-10, 2025)

	2025
Destroyed	71%
Not destroyed	29%

Do you think that the U.S. should support Israel in airstrikes to destroy Iran’s nuclear weapons facilities or should the U.S. not offer any support for such a mission? (Harvard CAPS/Harris Poll, April 9-10, 2025)

	2025
Support	58%
Not support	42%

To what extent do you agree or disagree, if at all, with the following statement? “Iran’s proxies in the Middle East, such as Hezbollah, Hamas, and the Houthis, pose a direct threat on the United States and our Western Allies.” (Council for a Secure America, March 20-21, 2025)

	2024	2025
Agree	54%	57%
Neither agree nor disagree	36%	34%
Disagree	10%	9%

And do you think the United States’ military action against Iran and Iran’s proxies Hezbollah, Hamas, and the Houthis should increase, decrease, or continue in the same manner? (Council for a Secure America, March 20-21, 2025)

	2024	2025
Increase military action	27%	28%
Keep military action about the same	56%	57%
Decrease military action	17%	15%

Do you think Iran is a regional sponsor of terror in the Middle East or not? (Harvard CAPS/Harris Poll, October 11-13, 2024)

	2024
Yes	73%
No	27%

Do you support or oppose Israel striking Iranian oil fields in retaliation for Iran's recent attack? (Harvard CAPS/Harris Poll, October 11-13, 2024)

	2024
Support	54%
Oppose	46%

Do you support or oppose Israel striking the Iranian nuclear weapons program in retaliation for Iran's recent attack? (Harvard CAPS/Harris Poll, October 11-13, 2024)

	2024
Support	54%
Oppose	46%

Do you think Israel is justified in responding to the recent Iranian missile attack on its territory which included the launch of over 200 rockets across civilian and military areas, or should it avoid doing so not to trigger a war between the two countries? (Harvard CAPS/Harris Poll, October 11-13, 2024)

	2024
Justified	63%
Avoid doing so	37%

Who do you blame more for the escalating conflict in the Middle East: Israel or Iran? (Harvard CAPS/Harris Poll, April 24-25, 2024, May 15-16, 2024, October 11-13, 2024)

	April 24	May 24	Oct 24
Iran	69%	69%	73%
Israel	31%	31%	27%

If Israel were attacked by Iran, do you think the U.S.… (Heritage Foundation, September 9-13, 2024)

	U.S. Muslims	General Public
Should Defend Israel with American Troops	9%	17%
Should Support Israel with Aid and Military Equipment But Not Send Troops	14%	35%
Should Support Diplomatically Only	25%	20%
Should Not Support Israel at All	37%	8%
Don’t Know	16%	19%

Which country do you consider to be the biggest national security threat to the United States? (McLaughlin & Associates, May 21-23, 2024)

China	45%
Russia	30%
North Korea	12%
Iran	8%

Do you believe Iran would use nuclear weapons against Israel? (McLaughlin & Associates, May 21-23, 2024)

Yes	61%
No	17%
DK	22%

Do you believe that the United States should take measures to prevent an Iranian atomic bomb? (McLaughlin & Associates, May 21-23, 2024)

Yes	75%
No	9%
DK	17%

Do you think that Iran is responsible for the attacks on Israel by Hamas and Hezbollah or do you think Iran is not really behind these attacks? (Harvard CAPS/Harris Poll, April 24-25, 2024, May 15-16, 2024)

	April 24	May 24
Responsible	75%	78%
Not responsible	25%	22%

Do you think Iran is a danger to the U.S. and the Middle East or is it not really a major danger? (Harvard CAPS/Harris Poll, April 24-25, 2024, May 15-16, 2024)

	April 24	May 24
Danger	80%	84%
Not a danger	20%	16%

Do you think that Iran should be allowed to have nuclear weapons or that it must be stopped from having nuclear weapons? (Harvard CAPS/Harris Poll, April 24-25, 2024)

	April 24	May 24
Allowed	20%	20%
Stopped	80%	80%

Do you think the best way to stop Iran from obtaining nuclear weapons is to negotiate a deal with it if possible or to place sanctions, isolate it and put a heavy cost to them of pursuing such weapons? (Harvard CAPS/Harris Poll, April 24-25, 2024, May 15-16, 2024)

	April 24	May 24
Negotiate a deal with it	33%	34%
Place sanctions, isolate it and put a heavy cost to pursuing nuclear weapons	67%	66%

Do you think it is possible to negotiate a deal with Iran to stop it from obtaining nuclear weapons or would they violate any such deal and develop them anyway? (Harvard CAPS/Harris Poll, April 24-25, 2024 May 15-16, 2024)

	April 24	May 24
Possible to negotiate a deal	35%	37%
They will violate any such deal	65%	63%

Should the US sanction Iran oil to block it from the market or should it continue to let Iran sell its oil? (Harvard CAPS/Harris Poll, April 24-25, 2024, May 15-16, 2024))

	April 24	May 24
Sanction Iranian oil	71%	69%
Continue to let Iran sell its oil	29%	31%

Do NATO countries have a responsibility to support Israel against Iranian aggression, or not? (Harvard CAPS/Harris Poll, April 24-25, 2024)

	2024
Yes	67%
No	33%

Should the United States push NATO to consider inviting Israel into the alliance to deter from further attacks by Iran? (Harvard CAPS-Harris Poll, April 24-25, 2024)

	2024
Yes	60%
No	40%

Has President Biden's Iran policy been successful or unsuccessful? (Harvard CAPS/Harris Poll, December 13-14, 2023, February 21-22, 2024)

	2023	2024
Successful	39%	39%
Unsuccessful	61%	61%

Is President Biden acting forcefully and appropriately enough against attacks by Iranian backed terrorists which have claimed the lives of 3 American servicemembers or has his response been too weak? (Harvard CAPS/Harris Poll,s February 21-22, 2024)

	2024
Acting forcefully enough	46%
Response has been too weak	54%

Do you think increasing tensions in the Middle East between Iran and the United States will likely lead to war? [wording not exact] (Rasmussen Reports, February 5-7, 2024)

Will lead to war	66%
Will not lead to war	24%

See also: Public Opinion in Iran

Which country do you think poses the biggest threat to the United States: China, Russia, North Korea, or Iran? (Quinnipiac, March 15, 2023, November 9-13, 2023)

	March 2023	November 2023
China	61%	56%
Russia	22%	21%
North Korea	8%	7%
Iran	2%	9%

Is Iran behind the terrorist attacks in the region? (harrisx for Jewish Federations of North America and Conference of Presidents, November 13, 2023)

Iran is behind the attacks	68%
Iran is not behind the attacks	32%

Do you think that the Biden administration should have traded releasing 6 hostages from Iran for $6 billion or not made that deal? (Harvard CAPS-Harris Poll, October 18, 2023)

Should have traded hostages	42%
Should not have traded	58%

Do you think the administration should honor that deal or suspend any payments to Iran? (Harvard CAPS-Harris Poll, October 18, 2023)

Honor the deal	34%
Suspend any payments	66%

Do you think that the Biden administration has been strong or weak in its dealings with Iran? (Harvard CAPS-Harris Poll, October 18, 2023)

Strong	39%
Weak	61%

Do you approve or disapprove of the way Joe Biden is handling the war between Israel and Hamas? (ABC News/IPSOS, October 13-14, 2023)

Approve	33%
Disapprove	62%

As you may know there is currently a debate about whether US government leaders should be ready to meet and talk with leaders of countries and groups with whom the US has hostile or unfriendly relations. Do you think US leaders should or should not be ready to meet and talk with leaders of Iran? [% Should] (Chicago Council Survey, September 7-18, 2023)

	2010	2012	2014	2023
Should	62%	68%	66%	72%

Below is a list of possible threats to the vital interest of the United States in the next 10 years. For each one, please select whether you see this as a critical threat, an important but not critical threat, or not an important threat at all: Iran's nuclear program. (Chicago Council, September 7-18, 2023)

	2010	2012	2014	2015	2018	2019	2020	2022	2023
Critical	68%	64%	58%	57%	52%	57%	61%	53%	49%

Based on what you know, do you think the U.S. should or should not participate in the following international agreements? The agreement that lifts some international economic sanctions against Iran in exchange for strict limits on its nuclear program for at least the next decade. (Chicago Council, July 7–26, 2021, September 7-18, 2023)

	2016	2017	2018	2021	2023
Should participate	60%	62%	66%	59%	63%

Do you think the US should continue to pursue negotiations to prevent Iran from obtaining a nuclear weapon in the near future? (Eurasia Group Foundation, October 5, 2022)

	Rep	Ind	Dem	Total
Yes	72%	77%	88%	79%
No	28%	23%	12%	21%

As you may know, President Trump withdrew the United States from the nuclear agreement that the United States made with Iran and five other countries. This agreement lifts economic sanctions against Iran in exchange for Iran dismantling its nuclear weapons program and allowing international inspectors to monitor Iran’s facilities. Some people think that we should re-enter the agreement, and some people think that we should not re-enter this agreement. Do you support or oppose the United States re-entering this agreement? (Jewish Electorate Institute, March 28-April 3, 2022)

	Jewish Voters
Support	68%
Oppose	32%

Do you think Iran possesses nuclear weapons? (University of Maryland, June 22-July 21, 2021)

	Rep	Ind	Dem	Total
Yes	70.6%	55.8%	52.6%	60.5%
No	13.0%	10.4%	19.3%	15.7%
Don’t Know	16.4%	33.8%	28.1%	23.8%

There has been some discussion about the circumstances that might justify using U.S. troops in other parts of the world. Please give your opinion about some situations. Would you favor or oppose the use of U.S. troops: To stop Iran from obtaining nuclear weapons? (Chicago Council, January 10-12, 2020, July 7–26, 2021, July 15-August 1, 2022)

	2006	2014	2015	2018	2019	2020	2021	2022
Favor	61%	69%	67%	65%	70%	44%	49%	38%

If Iran restarts development towards a nuclear weapon, would you strongly support, somewhat support, somewhat oppose, or strongly oppose the U.S. taking each of the following actions: Accept that Iran will acquire nuclear weapons. (Chicago Council, January 10-12, 2020, July 7–26, 2021, July 15-August 1, 2022)

	2019	2020	2021	2022
Support	20%	23%	22%	23%

If Iran restarts development towards a nuclear weapon, would you strongly support, somewhat support, somewhat oppose, or strongly oppose the U.S. taking each of the following actions: Conduct cyberattacks against Iran’s computer systems. (Chicago Council, January 10-12, 2020, July 7–26, 2021, July 15-August 1, 2022)

	2019	2020	2021	2022
Support	52%	65%	64%	64%

If Iran restarts development towards a nuclear weapon, would you strongly support, somewhat support, somewhat oppose, or strongly oppose the U.S. taking each of the following actions: Conduct airstrikes against Iran’s nuclear facilities? (Chicago Council, January 10-12, 2020, July 7–26, 2021, July 15-August 1, 2022)

	2019	2020	2021	2022
Support	48%	56%	60%	46%

f Iran restarts development towards a nuclear weapon, would you strongly support, somewhat support, somewhat oppose, or strongly oppose the U.S. taking each of the following actions: Impose tighter sanctions on Iran. (Chicago Council, January 10-12, 2020, July 7–26, 2021, July 15-August 1, 2022)

	2020	2021	2022
Support	77%	84%	79%

f Iran restarts development towards a nuclear weapon, would you strongly support, somewhat support, somewhat oppose, or strongly oppose the U.S. taking each of the following actions: Rejoin the nuclear agreement that lifts some international sanctions against Iran in exchange for strict limits on its nuclear program. (Chicago Council, July 7–26, 2021, July 15-August 1, 2022)

	2020	2022
Support	66%	66%

What do you expect will happen to US-Iran relations during the Biden presidency; will they improve, worsen, or remain the same? (Chicago Council, January 29–February 1, 2021)

	2021
Improve	31%
Worsen	30%
Stay the same	37%
DK/NA	3%

If Iran restarts development towards a nuclear weapon, would you strongly support, somewhat support, somewhat oppose, or strongly oppose the U.S. taking each of the following actions: Continue diplomatic efforts to get Iran to stop enriching uranium. (Chicago Council, January 10-12, 2020, July 7–26, 2021)

	2019	2020	2021
Support	81%	85%	84%

How great a priority is it for the United States in Russia to work together on the following issues: Preventing Iran from developing nuclear weapons capabilities. (Chicago Council, February 2021)

	2021
It is not important	3%
It is important but not essential	23%
It is essential	31%

Over the next 10 years, how do you think the relationship between United States and the following countries will change: Iran (Chicago Council, February 2021)

	2021
Relations will remain as they are now	43%
Grow closer together	13%
Further apart	40%

Would you support or oppose the US government launching a military strike on Iran if it announces it now has nuclear weapons? (Harvard-Harris September 22-24, 2019)

	Total
Support	49%
Oppose	51%

As you may know, the United States conducted an airstrike last week that targeted and killed a top Iranian military commander. Do you think that this action will make the United States more safe, less safe, or make no difference? (Chicago Council, January 10-12, 2020)

	Total
Safer	28%
Less safe	47%
Make no difference	22%
DK	2%

If Iran attacks U.S. military or diplomatic personnel in the Middle East, would you strongly support, somewhat support, somewhat oppose or strongly oppose the U.S. taking each of the following actions (% strongly/somewhat support (Chicago Council, January 10-12, 2020)

	Total
Conduct airstrikes against Iran’s military facilities	68%
Conduct cyberattacks against Iran’s computer systems	67%
Carry out targeted assassination of Iranian military personnel	57%
Send US troops to destroy Iran’s military facilities	51%
Send US troops to overthrow the Iranian government	38%
Conduct airstrikes against Iranian cultural sites	25%

As you may know, President Trump recently authorized an airstrike at Baghdad International Airport that killed Iran’s top general Qasem Soleimani. Based on what you know, do you approve or disapprove of the airstrike? (Morning Consult/Politico, January 10-12, 2020)

	Total
Approve	49%
Disapprove	39%
DK	12%

Following the airstrike that killed Qasem Soleimani, Iran launched missiles at two military bases in Iraq though no US or Iraqi citizens were killed in these attacks. In response to these attacks President Donald Trump has decided to move forward with economic sanctions, but not further military attacks on Iran. Do you approve or disapprove of each of the following?: President Trump’s decision not to take further military action against Iran (Morning Consult/Politico, January 10-12, 2020)

	Total
Approve	71%
Disapprove	14%
DK	15%

Do you approve or disapprove of each of the following? President Trump’s decision to impose economic sanctions on Iran (Morning Consult/Politico, January 10-12, 2020)

	Total
Approve	58%
Disapprove	22%
DK	19%

Based on what you know, how likely do you believe it is that the United States will go to war with Iran in the next month? (Morning Consult/Politico, January 10-12, 2020)

	Total
Likely	38%
Unlikely	49%
DK	19=3%

All in all, do you think the U.S. decision to conduct an airstrike that killed Iranian General Soleimani was the right decision or the wrong decision? (Pew Research Center, January 15, 2020)

	Total
Right decision	48%
Wrong decision	43%
DK	9%

All in all, do you think the Trump administration’s approach toward Iran has made the United States safer/less safe? (Pew Research Center, January 15, 2020)

	Total
Safer	28%
Less safe	44%
Hasn’t made much difference	26%
DK	2%

All in all, do you think the Trump administration’s approach toward Iran has increased/decreased the likelihood of a major military conflict between the U.S. and Iran? (Pew Research Center, January 15, 2020)

	Total
Increased	54%
Decreased	17%
Not made much difference	26%
DK	2%

How much do you trust what the Trump administration says about the situation with Iran? (Pew Research Center, January 15, 2020)

	Total
A great deal	23%
A fair amount	22%
Not too much	18%
Not at all	35%

Do you think killing Qassem Soleimani, a top Iranian general, was the right action for the United States to take or the wrong action for the United States to take? (Quinnipiac University, January 8-12, 2020)

	Total
Right action	45%
Wrong action	41%
DK	15%

Do you think the killing of Qassem Soleimani, a top Iranian general, has made Americans more safe, less safe, or has had no impact on the safety of Americans? (Quinnipiac University, January 8-12, 2020)

	Total
More safe	32%
Less safe	45%
No impact	18%
DK	5%

Do you think President Trump should consult with Congress if he plans to launch more military strikes in the Middle East or not? (Quinnipiac University, January 8-12, 2020)

	Total
Yes	65%
No	29%
DK	6%

Do you approve or disapprove of the decision to send more U.S. troops to the Middle East, following the killing of Qassem Soleimani? (Quinnipiac University, January 8-12, 2020)

	Total
Approve	44%
Disapprove	46%
DK	10%

Would you support or oppose the United States going to war against Iran? (Quinnipiac University, January 8-12, 2020)

	Total
Support	26%
Oppose	64%
DK	10%

Do you approve or disapprove of the way Donald Trump is handling the nation's policy toward Iran? (Quinnipiac University, January 8-12, 2020)

	Total
Approve	43%
Disapprove	51%
DK	7%

Do you think the U.S. airstrike in Iraq that killed Iranian General Qassem Soleimani has made the United States: (ABC News, January 10-11, 2020)

	Total
More safe	25%
Less safe	52%
Hasn’t had much effect one way or the other	22%

How concerned are you about the possibility of the United States getting involved in a full-scale war with Iran: (ABC News, January 10-11, 2020)

	Total
Very concerned	32%
Somewhat concerned	41%
Not so concerned	20%
Not concerned at all	7%

Do you approve or disapprove of how President Donald Trump is handling Iran? (ABC News, January 10-11, 2020)

	Total
Approve	43%
Disapprove	56%
DK	2%

Do you approve or disapprove of how President Donald Trump is handling Iran? (NPR/Marist, January 7-12, 2020)

	Total
Approve	42%
Disapprove	49%
Unsure	9%

Do you support or oppose the U.S. killing Iranian General Qasem Soleimani? (USA Today/Ipsos, January 7-8, 2020)

	Total
Support	42%
Oppose	33%
DK	25%

Has the killing of Soleimani and its immediate aftermath made the United States more safe or less safe? (USA Today/Ipsos, January 7-8, 2020)

	Total
More Safe	24%
Less Safe	55%
DK	21%

At this moment, would you support or oppose U.S. airstrikes on Iranian military targets in Iran and across the Middle East? (USA Today/Ipsos, January 7-8, 2020)

	Total
Support	39%
Oppose	38%
DK	23%

At this moment, would you support or oppose U.S. airstrikes on targets in Iran including cultural and world heritage sites? (USA Today/Ipsos, January 7-8, 2020)

	Total
Support	22%
Oppose	57%
DK	21%

If Iran were to kill a major U.S. officer in Middle East, would you support or oppose U.S. airstrikes on Iranian military targets in Iran and across the Middle East? (USA Today/Ipsos, January 7-8, 2020)

	Total
Support	55%
Oppose	21%
DK	24%

Do you agree or disagree with the following?: Killing Soleimani shows Iran that the U.S. won’t be pushed around (USA Today/Ipsos, January 7-8, 2020)

	Total
Agree	53%
Disagree	31%
DK	15%

Do you agree or disagree with the following?: President Trump’s behavior with Iran is reckless (USA Today/Ipsos, January 7-8, 2020)

	Total
Agree	52%
Disagree	34%
DK	15%

How likely, if at all, do you believe it is that United States will go to war with the following countries within the next few years: Iran (Reuters/Ipsos, January 3-6, 2020)

	Total
Very likely	31%
Somewhat likely	40%
Not very likely	12%
Not at all likely	5%
DK	13%

In your opinion, should the U.S. conduct a preemptive attack on Iranian military interests? (Reuters/Ipsos, January 3-6, 2020)

	Total
Yes	27%
No	41%
DK	33%

If Iran attacked U.S. military forces first, how should the U.S. respond? (Reuters/Ipsos, January 3-6, 2020)

	Total
Diplomacy only	8%
Limited military response with airstrikes on Iranian military targets	34%
Full military response with airstrikes on Iranian military targets and ground troops to invade Iran	37%
DK	21%

As you may know, President Trump recently authorized an airstrike at Baghdad International Airport that killed Iran’s top general Qasem Soleimani. Based on what you know, do you approve or disapprove of the airstrike? (Morning Consult/Politico, January 4-5, 2020)

	Total
Approve	47%
Disapprove	40%
DK	14%

Based on what you know, do you think the airstrike that killed Iran’s top general Qasem Soleimani will make the United States: (Morning Consult/Politico, January 4-5, 2020)

	Total
Safer	32%
Less safe	50%
DK	18%

And based on what you know, do you think the airstrike that killed Iran’s top general Qasem Soleimani makes war with Iran: (Morning Consult/Politico, January 4-5, 2020)

	Total
Much more likely	28%
Somewhat more likely	41%
Somewhat less likely	10%
Much less likely	5%
DK	17%

Which of the following comes closest to your opinion, even if neither is exactly correct? (Morning Consult/Politico, January 4-5, 2020)

	Total
President Trump was correct to move forward with the airstrike in Baghdad without congressional approval	37%
President Trump should have sought congressional approval before moving forward with the airstrike in Baghdad	49%
DK	15%

Do you approve or disapprove of the decision to order the airstrike that killed Iranian military commander Qassem Soleimani? (YouGov/HuffPost, January 3-5, 2020)

	Total
Approve	43%
Disapprove	38%
Not sure	19%

Do you think President Trump should or should not have gotten authorization from Congress before ordering the airstrike? (YouGov/HuffPost, January 3-5, 2020)

	Total
He should have gotten authorization from Congress	44%
He should NOT have gotten authorization from Congress	34%
Not sure	22%

Do you approve or disapprove of the decision to send 3,500 additional U.S. troops to the Middle East following the airstrike? (YouGov/HuffPost, January 3-5, 2020)

	Total
Approve	40%
Disapprove	39%
Not sure	21%

Did you approve or disapprove of President Trump’s decision to withdraw the US from the Iran nuclear deal? (YouGov/HuffPost, January 3-5, 2020)

	Total
Approve	36%
Disapprove	38%
Not sure	25%

Do you approve or disapprove of Donald Trump’s handling of issues related to Iran? (YouGov/HuffPost, January 3-5, 2020)

	Total
Approve	40%
Disapprove	46%
Not sure	14%

Do you think Donald Trump does or does not have a clear strategy for dealing with Iran? (YouGov/HuffPost, January 3-5, 2020)

	Total
He does	32%
He does not	47%
Not sure	21%

As you may know, the United States and five other countries entered an agreement with Iran aimed at preventing Iran from developing nuclear weapons. Do you think the U.S. should or should not withdraw from that agreement? (CNN, May 2-5, 2018)

	2017	2018
Should withdraw	27%	29%
Should not withdraw	67%	63%
Unsure/refused	7%	8%

Regardless of what you think about whether the U.S. should withdraw from that agreement, do you think that Iran has or has not violated the terms of the agreement? (CNN, May 2-5, 2018)

	2018
Has violated	62%
Has not violated	19%
Unsure/refused	19%

As you may know, the United States and other countries made a deal in 2015 to lift economic sanctions against Iran in exchange for Iran agreeing not to manufacture nuclear weapons. This agreement is sometimes referred to as the Iran nuclear deal. Knowing this, do you support or oppose this agreement? (Politico, May 2018)

	Total
Strongly Support	23%
Somewhat Support	31%
Somewhat Oppose	11%
Strongly Oppose	17%
Don't know/No answer	17%

As you may know, President Trump recently announced that the United States is withdrawing from the Iran nuclear deal. Based on what you know, do you support or oppose the United States withdrawing from the Iran nuclear deal? (Politico, May 2018)

	Total
Strongly Support	24%
Somewhat Support	18%
Somewhat Oppose	15%
Strongly Oppose	25%
Don't know/No answer	18%

How much have you seen, read, or heard about the United States withdrawing from the Iran Nuclear Deal? (Politico, May 2018)

	Total
A lot	44%
Some	34%
Not Much	12%
Nothing at all	10%

Which of the following statements comes closest to your view, even if neither is exactly right? (Politico, May 2018)

	Total
The United States and President Trump made the right decision in withdrawing from the Iran nuclear deal	37%
The United States and President Trump made the wrong decision in withdrawing from the Iran nuclear deal	40%
Don't know/No answer	23%

Does withdrawing from the nuclear deal make Israel more or less safe? (Politico, May 2018)

	Total
Much more safe	9%
Somewhat more safe	9%
Somewhat less safe	19%
Much less safe	29%
No difference	14%
Don't know/No answer	20%

Does withdrawing from the nuclear deal make the United States more or less safe? (Politico, May 2018)

	Total
Much more safe	13%
Somewhat more safe	13%
Somewhat less safe	21%
Much less safe	20%
No difference	17%
Don't know/No answer	15%

Does withdrawing from the nuclear deal help or hurt the U.S. national security? (Politico, May 2018)

	Total
Strongly helps	15%
Somewhat helps	15%
Somewhat hurts	27%
Strongly hurts	18%
Don't know/No answer	25%

Does withdrawing from the nuclear deal help or hurt the U.S. economy? (Politico, May 2018)

	Total
Strongly helps	12%
Somewhat helps	17%
Somewhat hurts	23%
Strongly hurts	11%
Don't know/No answer	36%

Does withdrawing from the nuclear deal help or hurt Israel? (Politico, May 2018)

	Total
Strongly helps	11%
Somewhat helps	16%
Somewhat hurts	25%
Strongly hurts	18%
Don't know/No answer	31%

How much have you seen, read, or heard about the United States withdrawing from the Iran Nuclear Deal? (Politico, May 2018)

	Total
A lot	44%
Some	34%
Not Much	12%
Nothing at all	10%

Do you think the United States should remain in the 2015 Iran nuclear deal, or do you think the United States should leave the 2015 Iran nuclear deal, or don't you know enough about it to say? (CBS, May 3-6, 2018)

Should remain	21%
Should leave	21%
Don't know enough	57%
Unsure/No answer	1%

Do you think the Iran deal should have been an agreement the President would sign on his own or a treaty that would have required Senate approval? (Harvard-Harris, October 2017)

	Total
A treaty that would have required Senate approval	81%
An agreement the President would sign on his own	19%

Do you think the Iran nuclear deal was a good deal or a bad deal for America? (Harvard-Harris, October 2017)

	Total
It was a bad deal	60%
It was a good deal	40%

Do you think Iran is following the terms of the nuclear deal or violating the terms of the nuclear accord? (Harvard-Harris, October 2017)

	Total
I think it is violating the deal	66%
I think it is following the deal	34%

Congress requires the President to certify that Iran is following the nuclear deal on a quarterly basis and can re-impose sanctions on Iran if the President does not certify compliance. The President did not certify compliance. Do you think Congress should impose sanctions on Iran or not? (Harvard-Harris, October 2017)

	Total
Yes Congress should impose sanctions	68%
No Congress should not impose sanctions	32%

In decertifying the Iran deal, President Trump does not end the deal but Congress then has 60 days in which it can decide whether to end the deal by putting sanctions back on Iran. Do you think President Trump should have certified that Iran was complying with the deal or was he right to not certify that they were complying? (Harvard-Harris, October 2017)

	Total
Yes the President was right	51%
No the President was wrong	49%

Do you support or oppose the nuclear deal with Iran? (Quinnipiac, August 2015)

	July 2015	August 2015	September 2015	October 2017
Support	28%	25%	26%	31%
Oppose	57%	55%	58%	47%
Unsure/No answer	15%	20%	16%	22%

Should we (the U.S.) keep or pull out from the JCPOA agreement? (H arvard-Harris, March 2017)

	Total
We should keep the agreement	47%
We should pull out from the agreement	53%

Do you believe Iran is sticking to, or violating the terms of the JCPOA agreement? (H arvard-Harris, March 2017)

	Total
Iran is violating the terms of the agreement	71%
Iran is sticking to the terms of the agreement	29%

Do you approve or disapprove of the Iran nuclear agreement? (Gallup, February 3-7, 2016)

	Total
Approve	30%
Disapprove	57%
No opinion	14%

How closely are you following the news about the nuclear agreement reached between Iran, the U.S., and five other nations last year that recently went into effect - very closely, somewhat closely, not too closely, or not at all? (Gallup, February 3-7, 2016)

	Total
Very closely	18%
Somewhat closely	37%
Not closely	26%
Not at all	17%

Do you see the development of nuclear weapons by Iran within the next 10 years as a critical threat, an important but not critical threat, or not an important threat at all? (Gallup, February 3-7, 2016)

	Total
Critical	75%
Important but not critical	18%
Not important	5%
No opinion	1%

As you may know, the U.S. Congress must approve the agreement the United States and 5 other countries reached with Iran that is aimed at peventing Iran from developing nuclear weapons before it can take effect. Do you think Congress should approve or reject the deal with Iran? (CNN/ORC, September 4-8, 2015)

	July 2015	August 2015	September 2015
Congress should approve the deal	44%	41%	47%
Congress should reject the deal	52%	56%	49%
No opinion	5%	2%	5%

Suppose such an agreement is approved and Iran violates its terms. If that happens, do you think the United States should or should not take military action against Iran? (CNN/ORC, September 4-8, 2015)

Should	64%
Should not	34%
Unsure	2%

If the agreement is approved, how likely do you think it is that Iran will violate the terms of the agreement: extremely likely, very likely, somewhat likely, or not at all likely? (CNN/ORC, September 4-8, 2015)

Extremely likely	37%
Very likely	23%
Somewhat likely	30%
Not at all likely	10%

(Half sample poll) As you may know, the U.S. and other countries have announced a deal to lift economic sanctions against Iran in exchange for Iran agreeing not to produce nuclear weapons. Do you support or oppose this agreement? (Washington Post, September 7-10, 2015)

	November 2013*	March 2015*	September 2015
Support	64%	59%	45%
Oppose	30%	31%	44%
No opinion	7%	10%	11%

*Different wording: Thinking now about the situation with Iran: Would you support or oppose an agreement in which the United States and other countries would lift major economic sanctions against Iran, in exchange for Iran restricting its nuclear program in a way that makes it harder for it to produce nuclear weapons?

(Half sample poll) As you may know, the U.S. and other countries have announced a deal to lift economic sanctions against Iran in exchange for Iran agreeing not to produce nuclear weapons. International inspectors would monitor Iran’s facilities, and if Iran is caught breaking the agreement economic sanctions would be imposed again. Do you support or oppose this agreement? (Washington Post, September 7-10, 2015)

	July 2015	September 2015
Support	56%	51%
Oppose	37%	41%
No opinion	7%	8%

Do you approve or disapprove of the recent nuclear agreement reached between the U.S. and Iran? (Pew, September 2015)

	July 2015	September 2015
Approve	33%	21%
Disapprove	45%	49%
Don't know/refuse	22%	30%

How confident are you in the abilities of the U.S. and the IAEA to monitor Iranian compliance? (Pew, September 2015)

	July 2015*	September 2015
Very confident	11%	12%
Somewhat confident	34%	30%
Somewhat unconfident	33%	27%
Not at all confident	21%	24%

*Do you have confidence in the international monitors ability to monitor Iranian compliance with the deal?

How confident are you that Iran's leaders will hold up their side of the agreement? (Pew, September 2015)

	July 2015*	September 2015
Very confident	3%	2%
Somewhat confident	23%	18%
Somewhat unconfident	35%	28%
Not at all confident	38%	42%

*Do you have confidence that Iran's leaders will hold up their side of the deal?

If this agreement is implemented, do you think the relationship between the U.S. and Iran will improve, get worse or stay about the same? (Pew, September 2015)

	July 2015	September 2015
Improve	23%	18%
Get worse	28%	30%
Stay about the same	40%	37%
Unsure/refused	9%	16%

How confident are you about the ability of the U.S. and the IAEA (International Atomic Energy Agency) to monitor Iran's compliance? (AJC, September 2015)

	U.S. Jews
Very confident	6.1%
Somewhat confident	37.8%
Somewhat unconfident	28.2%
Not at all confident	26.1%

Will Israel's security be more or less at risk with the nuclear deal? (AJC, September 2015)

	U.S. Jews
More at risk	42.8%
Less at risk	17.9%
Stay the same	37.8%

How confident are you that this agreement will prevent Iran from obtaining nuclear weapons? (AJC, September 2015)

	U.S. Jews
Very confident	4.9%
Somewhat confident	30.7%
Somewhat unconfident	30.1%
Not confident at all	33.2%

Recently, the U.S., along with five other countries, reached a deal on Iran's nuclear program. Do you approve or disapprove of this agreement? (AJC, September 2015)

	U.S. Jews
Approve strongly	16.4%
Approve somewhat	34.2%
Disapprove somewhat	19.8%
Disapprove strongly	27.4%

As you may have heard, one part of the nuclear agreement allows Iranians to inspect their own possible covert nuclear activities at the Parchin site. After collecting samples, photos, and videos, the Iranians will send this information to the U.N. inspectors instead of allowing inspectors to come see the facility. Knowing this, do you approve or disapprove of this agreement? (The Israel Project, September 2015)

	Total
Approve	20%
Disapprove	66%
Don't know/refuse	14%

Some supporters of the Iran deal have suggested that elected officials who are both Jewish and oppose the nuclear deal with Iran are opposed to the deal because they are more loyal to Israel than the U.S. In your opinion, do these comments constitute anti-Semitism? (The Israel Project, September 2015)

	Total
Very anti-Semitic	12%
Somewhat anti-Semitic	25%
Not very anti-Semitic	15%
Not anti-Semitic at all	17%
Don't know/refuse	32%

Indicate which of the next two statements you agree with more: (The Israel Project, September 2015)

	Total
The deal with Iran is good progress and will limit their nuclear program	28%
The deal with Iran is not tough enough and will eventually lead to the Iranians getting a nuclear weapon	58%
Don't know/refuse	14%

Based on what you know, do you approve or disapprove of this agreement? (The Israel Project, September 2015)

	Total
Approve	36%
Disapprove	49%
Don't know/refuse	15%

How much have you seen, heard, or read, about the Congressional debate surrounding the nuclear deal with Iran? (The Israel Project, September 2015)

	Total
A lot	31%
Some	46%
Very little	17%
Nothing	6%

The United States has reached an agreement with Iran that ends some economic sanctions on that country in exchange for cutbacks in Iran’s nuclear weapons program. How likely is it, that Iran will uphold its end of the deal? (Rasmussen, September 2015)

	Total
Very likely	8%
Likely	35%
Not very likely	18%
Not likely at all	39%

Will the treaty the Obama administration has negotiated with Iran make the Middle East safer or put it more at risk? Or will the treaty have no impact on the safety and security of the region? (Rasmussen, September 2015)

	Total
It will make the Middle East safer	23%
It will not have an impact	27%
It will put the region more at risk	40%
Don't know/refuse	10%

The United States has reached an agreement with Iran that ends some economic sanctions on that country in exchange for verifiable cutbacks in Iran's nuclear weapons program. Should any agreement the Obama administration makes with Iran regarding the Iranian nuclear program require the approval of Congress? (Rasmussen, September 2015)

	Total
The agreement needs to be approved by Congress	66%
The agreement does not require Congressional approval	20%
Don't know/refuse	14%

Would you recommend that your members of Congress APPROVE or NOT APPROVE the [nuclear] agreement? (University of Maryland, August 17-20, 2015)


Support	65%
Oppose	24%
Don't know/refuse to answer	10%

As you may know, the U.S. and other countries have imposed strict economic sanctions against Iran while that country has nuclear facilities which could eventually allow it to produce its own nuclear weapons. Do you favor or oppose an agreement that would ease some of those economic sanctions and in exchange require Iran to accept major restrictions on its nuclear program but not end it completely and submit to greater international inspection of its nuclear facilities? (CNN/ORC, August 13-16, 2015)

	April 2015	August 2015
Favor	53%	50%
Oppose	43%	46%
Unsure	4%	4%

If your Senators and Congressman support the Iran deal, would you ever vote for them again in the future? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Yes	28.9%	11.9%	44.9%
No	54.1%	74.2%	36.1%
Don't know/refuse	17%	13.9%	19%

If a majority of Representatives vote against the JCPOA and Obama vetoes the legislation, should your Congressional Representative support the President's veto or vote to override the veto? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Support	33.5%	9.3%	60.3%
Override	56%	84.7%	24.6%
Don't know/refuse	10.5%	6%	15.2%

Do you believe the U.S. Congress should be required to vote on the deal, or should the deal be able to go into effect without a Congressional vote? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Required to vote	69%	81.7%	48%
Go into effect w/o	21.7%	10.9%	38.4%
Don't know/refuse	9.3%	7.3%	13.6%

Do you think that President Obama and Secretary of State Kerry are telling Americans all of the facts about the deal, or only what they think will help the agreement pass Congress? (Secure American Now, August 2015)

	Total	Republicans	Democrats
All the facts	24.6%	5.4%	48.4%
Only what helps pass	64.6%	87.0%	40.5%
Don't know/refuse	10.8%	7.6%	11.2%

Should Congress increase sanctions on Iran to stop it's terrorist activities even though it has threatened to walk away from the deal? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Yes	69.4%	79.7%	47.7%
No	21.5%	10.7%	34.8%
Don't know/refuse	13.1%	9.6%	17.5%

Do you think the Iran deal will make Iran a friend to the United States or a more dangerous enemy? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Friend	17.4%	4%	35.4%
More dangerous enemy	62%	85.1%	36.9%
Don't know/refuse	20.7%	10.9%	27.7%

Should Congress approve a deal that allows Iran to inspect their own nuclear sites without supervision from international inspectors? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Yes	7%	3.7%	11.3%
No	88.1%	93.8%	79.3%
Don't know/refuse	4.9%	2.5%	9.3%

Should your Congressmen and Senators vote for an Iran deal that lifts sanctions and provides Iran $100 billion that it can use to finance it's terrorist activities? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Yes	9.5%	2.7%	18.1%
No	77.9%	90.4%	64%
Don't know/refuse	12.5%	6.9%	17.9%

Should your Congressional representatives vote in favor of a deal that gives Iran 24 days notice before inspections of it's nuclear labs can take place? (Secure American Now, August 2015)

	Total	Republicans	Democrats
Yes	26.6%	12.2%	43.8%
No	64%	80.7%	42.2%
Don't know/refuse	9.4%	7.1%	14%

Would you recommend that your members of Congress approve or reject the JCPOA? (University of Maryland, August 2015)

	Total	Republicans	Democrats
Approve	52%	30%	69%
Reject	47%	69%	32%

If you were in Congress and had to cast an up-or-down vote on the recent deal with Iran that lifts sanctions for ten years in exchange for Iran curtailing its pursuit of a nuclearprogram over that time period -- would you approve or reject the deal? (Fox News, August 2015)

	Total
Approve	31%
Reject	58%
Don't know/No answer	10%

Do you think Iran can be trusted to honor the agreement, or not? (Fox News, August 2015)

	Total
Yes	18%
No	75%
Don't know/No answer	6%

As you may know, New York Senator Chuck Schumer, the second-ranking Democrat inthe U.S. Senate and also a prominent supporter of Israel, recently stated he opposes theIran nuclear deal. Does Schumer’s opposition make you more or less favorable towardthe deal, or doesn't it affect you either way? (Fox News, August 2015)

	Total
More favorable	7%
Less favorable	13%
No difference	76%
Don't know/No answer	3%

The United States and other countries have recently negotiated an agreement with Iran to curb that country's nuclear program and prevent Iran from developing a nuclear weapon. Have you seen or heard a lot, a little, or nothing at all about this? (Monmouth University, August 2015)

	Total	Republicans	Democrats
A lot	50%	63%	48%
A little	38%	29%	41%
Nothing	12%	9%	11%

Should Congress vote to approve or not approve this agreement, or are you not sure? (Monmouth University, August 2015)

	Total	Republicans	Democrats
Approve	27%	13%	41%
Not approve	32%	55%	14%
Not sure	41%	32%	45%

How much do you trust Iran to abide by the terms of this agreement - a lot, a little, or not at all? (Monmouth University, August 2015)

	Total	Republicans	Democrats
A lot	6%	2%	11%
A little	28%	17%	39%
Not at all	61%	80%	43%
Not sure	5%	1%	7%

Who do you think got more of what they wanted from this deal, the United States or Iran, or did both countries get what they wanted? (Monmouth University, August 2015)

	Total	Republicans	Democrats
U.S.	14%	8%	15%
Iran	41%	67%	23%
Both	23%	9%	39%
Neither	5%	4%	4%
Not Sure	17%	13%	19%

Do you support or oppose the nuclear deal with Iran? (Quinnipiac, August 2015)

	Total	Republicans	Democrats
Support	28%	3%	52%
Oppose	57%	86%	32%
Don't know/No answer	15%	11%	16%

Do you think the nuclear deal with Iran will make the world safer or less safe? (Quinnipiac, August 2015)

	July Total	August Total	Republicans	Democrats
Safer	30%	30%	4%	54%
Less Safe	58%	58%	87%	32%
Don't know/No answer	12%	15%	11%	16%

Do you approve of the way that President Obama has dealt with Iran in general? (Quinnipiac, August 2015)

	Total	Republicans	Democrats
Support	35%	3%	67%
Oppose	56%	93%	23%
Don't know/No answer	9%	4%	10%

Recently, Iran and a group of six countries led by the United States reached an agreement to limit Iran's ability to make nuclear weapons for more than a decade in return for lifting economic sanctions against Iran. From what you've heard or read so far, do you approve or disapprove of the recent agreement with Iran, or don't you know enough about it yet to say? (CBS, July 29-August 2, 2015)

Approve	20%
Disapprove	33%
Don't know enough	46%
Unsure/No Answer	1%

Do you think the United States could have negotiated an agreement that was more favorable to the United States, or do you think this was the best agreement the United States could have negotiated with Iran at this time? (CBS, July 29-August 2, 2015)

Could have been more favorable	53%
Was best possible at this time	26%
Unsure/No Answer	21%

How effective do you think the recent agreement with Iran will be in preventing Iran from developing a nuclear weapon: very effective, somewhat effective, not very effective, or not at all effective? (CBS, July 29-August 2, 2015)

Very effective	9%
Somewhat effective	29%
Not very effective	21%
Not at all effective	32%
Unsure/No Answer	10%

How much have you seen, read, or heard about the negotiations with Iran in regard to their nuclear program and international sanctions? (The Israel Project, July 2015)

	Jewish Americans
A lot	42%
Some	42%
Not much	11%
Nothing	4%

The U.S. Congress has 60 days to review the deal and vote on whether or not to lift U.S. sanctions on Iran. In your opinion, should Congress vote to...? (The Israel Project, July 2015)

	Jewish Americans
Approve the deal	40%
Reject the deal	45%
Don't know	15%

As you may know, an agreement was reached in which the United States and other countries would lift major economic sanctions against Iran, in exchange for Iran restricting its nuclear program in a way that makes it harder for it to produce nuclear weapons. Do you support or oppose this agreement, or don’t know enough to say? (Los Angeles Jewish Journal, July 2015)

	Jewish Americans	All Americans
I support the deal	48%	28%
I oppose the deal	28%	24%
Don't know enough	25%	48%

As you may know, an agreement has been reached between Iran and a group of six other nations, including the U.S. The agreement attempts to prevent Iran from developing a nuclear weapon by limiting Iran's ability to produce nuclear material and allowing inspections into Iran's nuclear sites in exchange for reducing certain economic sanctions that are currently in place. Do you support or oppose this agreement or do you not know enough to have an opinion? (NBC/Wall Street Journal, July 26-30, 2015)

Support	35%
Oppose	33%
Don't know enough	32%

The U.S. and other countries have announced a deal to lift economic sanctions against Iran in exchange for Iran agreeing not to produce nuclear weapons. International inspectors would monitor Iran’s facilities, and if Iran is caught breaking the agreement economic sanctions would be imposed again. Do you support or oppose this agreement? (Washington Post/ABC, July 2015)

	Total
I support the deal	56%
I oppose the deal	37%
No opinion	7%

Do you support or oppose the agreement (Republicans)? (Washington Post/ABC, July 2015)

	Total
I support the deal	41%
I oppose the deal	54%
No opinion	5%

Do you support or oppose the agreement (Democrats)? (Washington Post/ABC, July 2015)

	Total
I support the deal	69%
I oppose the deal	25%
No opinion	6%

How confident are you that this agreement will prevent Iran from developing nuclear weapons? (Washington Post/ABC, July 16-19, 2015)

	November 2013	March 2015	July 2015
Very confident	4%	4%	6%
Somewhat confident	32%	34%	29%
Not so confident	27%	26%	22%
Not confident at all	34%	34%	42%
No opinion	3%	3%	1%

Do you approve of the way that President Obama has dealt with Iran in general? (Washington Post/ABC, July 2015)

	Total	Republicans	Democrats
I approve	35%	80%	59%
I disapprove	52%	20%	41%

Would you support or oppose legislation that would make any Iran agreement subject to congressional approval? (Quinnipiac, April 2015)


Support	65%
Oppose	24%
Don't know/refuse to answer	10%

Would you prefer military intervention against Iran's nuclear program or a negotiated settlement to reduce its nuclear potential? (Quinnipiac, April 2015)


Military intervention	13%
Negotiated settlement	77%
Don't know/refuse to answer	10%

How confident are you that this agreement would prevent Iran from developing nuclear weapons; very confident, somewhat confident, not so confident, or not confident at all? (Quinnipiac, April 2015)


Very confident	4%
Somewhat confident	31%
Not so confident	23%
Not confident at all	39%
Don't know/refuse to answer	3%

As you may know a preliminary agreement was reached in which the United States and other countries would lift major economic sanctions against Iran, in exchange for Iran restricting its nuclear program in a way that makes it harder for it to produce nuclear weapons. Do you support or oppose this agreement? (Quinnipiac, April 2015)


Support	58%
Oppose	33%
Don't know/refuse to answer	9%

Do you think that Iran's nuclear program is a major threat, minor threat, or not a threat at all to the United States? (MSNBC, April 2015) (Quinnipiac, April 2015)

	MSNBC, April 2015	Quinnipiac, April 2015
Major threat	53%	63%
Minor threat	37%	26%
Not a threat at all	8%	7%
Don't Know	2%	4%

Based on what you know about the proposed new deal with Iran and the negotiations on it's nuclear program, would you say President Obama is being too tough on Iran, too soft, or striking the right balance? (Fox News, April 2015)


Too tough	2%
Too soft	51%
Right balance	34%
Don't know/refuse to answer	13%

Do you think negotiating with Iran is the right thing for the United States to do because it’s the best way to prevent Iran from getting nuclear weapons, or is negotiating with Iran the wrong thing to do because Iran can’t be trusted to honor any agreement? (Fox News, April 2015)


It is the right thing to do	40%
It is the wrong thing to do	50%
Mixed/not sure	5%
Don't know/refuse to answer	5%

Do you think that Iran poses a real national security threat to the United States? (Fox News, April 2015)


Yes	69%
No	29%
Don't Know	5%

Do you approve or disapprove of the way that President Obama is handling the Iran situation? (Fox News, April 2015)

	April 2015	January 2014	October 2013
Approve	32%	35%	42%
Disapprove	57%	53%	46%
Don't Know	11%	12%	11%

Last week, the US and 5 other nations struck a tentative deal with Iran. Are you more optimistic or pessimistic that this deal will make the world safer by containing Iran's ability to obtain nuclear weapons? (Bloomberg, April 2015)


More optimistic	49%
More pessimistic	43%
Don't Know	8%

As you may know, the United States, along with five other nations, has negotiated the framework of an agreement with Iran to restrict that country's nuclear program. How likely do you think it is that Iran will abide by the agreement and not develop a nuclear weapon? (MSNBC, April 2015)


Very likely	4%
Somewhat likely	21%
Not too likely	37%
Not likely at all	31%
Don't Know	7%

How closely have you been following news about the United States negotiating an agreement with Iran about their nuclear program? (MSNBC, April 2015)


Very closely	12%
Somewhat closely	38%
Not too closely	34%
Not at all closely	16%
Don't Know	1%

Do you approve or disapprove of the way that President Obama is handling the situation with Iran? (MSNBC, April 2015)


Strongly approve	16%
Somewhat approve	32%
Somewhat disapprove	23%
Strongly disapprove	27%
Don't Know	2%

Thinking now about the situation with Iran – would you support or oppose an agreement in which the United States and other countries would lift major economic sanctions against Iran, in exchange for Iran restricting its nuclear program in a way that makes it harder for it to produce nuclear weapons? Do you feel that way strongly or somewhat? (Washington Post, March 29, 2015)

	November 2013	March 2015
Support	64%	59%
Oppose	30%	31%
No opinion	7%	10%

How confident are you that an agreement with Iran would prevent Iran from developing nuclear weapons? (ABC News/Washington Post, March 30, 2015)


Very Confident	4%
Somewhat Confident	33%
Somewhat Unconfident	26%
Not Confident At All	34%
Don't Know	3%

Have you heard of the nuclear agreement that has been reached between Iran and the P5+1? (Pew, July 2015)

	Total
I have heard of it	79%
I have not heard of it	21%

Do you approve of the nuclear agreement that has been reached between Iran and the P5+1 (Republicans)? (Pew, July 2015)

	Total
Approve	14%
Disapprove	75%
No opinion	11%

Do you approve of the nuclear agreement that has been reached between Iran and the P5+1 (Democrats)? (Pew, July 2015)

	Total
Approve	59%
Disapprove	25%
No opinion	26%

What do you think the effect of the deal will be on Iranian-U.S. relations? (Pew, July 2015)

	Total
There will be little change	42%
U.S.-Iranian relations will worsen	28%
U.S.-Iranian relations will improve	25%

If you have heard at least a little bit about the negotiations, do you think that the Iranians are serious about addressing nuclear concerns? (Pew, March 30, 2015)


Serious	27%
Not Serious	63%
Don't Know	10%

Who should have the final authority for approving a nuclear agreement with Iran? (Pew, March 30, 2015)


The President	29%
Congress	62%
Don't Know	9%

Do you approve or disapprove of the United States negotiating directly with Iran over it's nuclear program? (Pew, March 30, 2015)


Approve of Negotiations	49%
Disapprove of Negotiations	40%
Don't Know	11%

The United States, United Kingdom, France, Germany, Russia, and China are negotiating a long-term nuclear deal with Iran. News reports suggest that any final agreement will allow Iran to retain the ability to enrich nuclear fuel for civilian applications. Would such an agreement be helpful or harmful to U.S. national security? (William & Mary, TRIP Poll, March 2015)


Helpful	32.8%
More helpful than harmful	43.9%
Neither helpful nor harmful	11.1%
More harmful than helpful	7.6%
Harmful	4.7%

In your opinion will the current negotiations between the P5+1 and Iran make any real difference in Iran's potential future production of nuclear weapons? (WSJ/NBC, March 2015)


Yes, the negotiations will make a real difference in Iran's potential future production of nuclear weapons	24%
No, the negotiations will not make any difference in Iran's potential future nuclear weapons production	71%

Will multinational negotiations with Iran to limit its ability to produce nuclear material make any impact on preventing Iran from producing nuclear weapons? [not exact wording] (NBC/Wall Street Journal, March 1-5, 2015)

	Total
Will make a difference	24%
Will not make a difference	71%

In your opinion is the development of nuclear weapons by Iran a critical threat to the United States within the next 10 years, an important but not critical threat, or not important at all? (Gallup, February 27, 2015)

	Feb 2015	Feb 2014	Feb 2013
Critical	77%	76%	83%
Important	16%	18%	16%
Not Important	5%	4%	1%

Currently there is some debate about what stance the US should take in relation to the possibility that Israel might attack Iran's nuclear program. You will see three arguments on this issue. Please select how convincing you find each of them. (University of Maryland, March 3-7, 2012; October 2, 2012)

1. The US should discourage Israel from attacking Iran's nuclear program. There are huge risks to US national interests, since Iran may attack US assets in retaliation, pulling the US into a war. Oil prices will skyrocket. Furthermore, US military leaders say the most that could be achieved would be to slow down Iran's nuclear program a bit and probably just lead them to rebuild it underground.

	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012
	Total		Republicans		Democrats		Independents
very convincing	17%	19%	12%	18%	26%	25%	12%	13%
somewhat convincing	54%	44%	55%	41%	58%	53%	46%	34%
somewhat unconvincing	17%	21%	22%	26%	10%	17%	20%	19%
very unconvincing	7%	12%	10%	14%	5%	5%	7%	20%
Don't know/Refused	5%	4%	--		--		--

2. The US should take a neutral stance. Israel has a right to take actions it sees as necessary for its own defense. Meanwhile, the US should think about its own interests and make a clear statement distancing itself from whatever Israel may choose to do, to reduce the chance that Iran will retaliate against US targets.

	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012
	Total		Republicans		Democrats		Independents
very convincing	11%	14%	10%	12%	14%	16%	8%	12%
somewhat convincing	41%	38%	39%	34%	46%	45%	37%	31%
somewhat unconvincing	30%	28%	32%	28%	30%	29%	27%	27%
very unconvincing	15%	15%	18%	22%	11%	9%	16%	17%
Don't know/Refused	4%	5%	--	--	--	--	--	--

3. The US should encourage Israel to attack Iran's nuclear program. Clearly Iran is trying to develop nuclear weapons, and if Israel will take the heat for stopping or at least slowing down the program, all the better for the US. The risk of Iran acquiring nuclear weapons is of greater concern than the fallout from an Israeli strike.

	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012
	Total		Republicans		Democrats		Independents
very convincing	8%	9%	11%	13%	7%	7%	5%	9%
somewhat convincing	30%	27%	31%	29%	24%	28%	35%	22%
somewhat unconvincing	33%	32%	34%	35%	39%	31%	23%	29%
very unconvincing	24%	25%	22%	17%	28%	32%	21%	25%
Don't know/Refused	5%	7%	--	--	--	--	--	--

So now, do you think the US should: (University of Maryland, March 3-7, 2012; October 2, 2012)

	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012	March 2012	October 2012
	Total		Republicans		Democrats		Independents
Discourage Israel from attacking Iran's nuclear program	34%	29%	30%	23%	44%	39%	24%	23%
Take a neutral stance	46%	53%	43%	51%	47%	54%	50%	53%
Encourage Israel to attack Iran's nuclear program	14%	12%	23%	20%	7%	3%	13%	14%
Don't know/refused	6%	6%	--	%	--	%	--	%

Do you think the United States should or should not proceed with a military strike on its own if Iran continues to enrich uranium, but the UN Security Council does not authorize a military strike? (Chicago Council on Global Affairs, October 1, 2012)

Should	27%
Should not	70%

Do you approve or disapprove of the way President Obama is handling Iran's Nuclear Program? (AJC, September 17, 2012)

Approve Strongly	18.8%
Approve Somewhat	41.8%
Disapprove Somewhat	19.9%
Disapprove Strongly	18.7%

How concerned are you about the prospect of Iran obtaining nuclear weapons? (AJC, April 30, 2012; September 17, 2012)

	April 2012	September 2012
Very Concerned	56%	55.4%
Somewhat Concerned	33%	32.4%
Not Too Concerned	9%	10.1%
Not Concerned At All	2%	2.1%
No Response	0%	n/a

How likely do you think it is that a combination of diplomacy and sanctions can stop Iran from developing nuclear weapons? (AJC, April 30, 2012; September 17, 2012)

	April 2012	September 2012
Very Likely	5%	7.1%
Somewhat Likely	37%	28.4%
Somewhat Unlikley	35%	37.8%
Very Unlikely	21%	26.4%
No Response	2%	n/a

If diplomacy and sanctions fail, would you support or oppose the United States taking military action against Iran to prevent it from developing nuclear weapons? (AJC, April 30, 2012; September 17, 2012)

	April 2012	September 2012
Support Strongly	28%	28%
Somewhat Support	36%	36.1%
Oppose Somewhat	24%	23.9%
Oppose Strongly	10%	11.0%
No Response	2%	n/a

If diplomacy and sanctions fail, would you support or oppose Israel taking military action against Iran to prevent it from developing nuclear weapons? (AJC, April 30, 2012; September 17, 2012)

	April 2012	September 2012
Support Strongly	39%	37.2%
Somewhat Support	36%	35.3%
Oppose Somewhat	14%	17.7%
Oppose Strongly	11%	8.7%
No Response	1%	n/a

Do you believe that Iran is developing nuclear weapons? (ADL, October 23, 2011; The Israel Project, July 31, 2012)

	2007	2009	2011	2012
Agree strongly	42%	64%	49%	80%
Agree total	71%	83%	80%	10%

Does Iran's nuclear program pose a very big threat, a moderate threat, not much of a threat or no threat at all to each of the following places... (The Israel Project, July 31, 2012)

	Israel	The United States	The U.S. & its NATO Allies
Very Big Threat	60%	34%	39%
Moderate Threat	27%	41%	41%
Not Much Threat	7%	15%	12%
No Threat	3%	9%	6%

Do you favor or oppose the expansion of international economic and diplomatic sanctions against Iran if they do not stop their nuclear program? (The Israel Project)

	October 2009	February 2010	July 2012
Favor	80%	73%	78%
Oppose	15%	19%	17%
Don't know/Refused to answer	4%	8%	--

Would you support U.S. military action against Iran if there were evidence of a nuclear weapons program? (Reuters/Ipsos, March 11, 2012)

Yes	56%
No	39%

Would you support U.S. military action against Iran if it led to higher gasoline prices? (Reuters/Ipsos, March 11, 2012)

Yes	53%
No	42%

Would you support Israeli military action against Iran if there were evidence of a nuclear weapons program? (Reuters/Ipsos, March 11, 2012)

Yes

62%

Would you support U.S. military action against Iran? (Reuters/Ipsos, March 11, 2012)

	Republicans	Democrats	Independents
Yes	70%	46%	51%

As you may know, some people are calling for Israel to conduct a military strike against Iran's nuclear program before it makes further progress. Others are arguing that it is better to wait for the newly-increased sanctions against Iran to take effect and that the US and other major powers should continue pursuing negotiations with Iran. Do you favor: (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Israel conducting a military strike against Iran's nuclear program	24%	38%	17%	17%
The US and other major powers continuing to pursue negotiations with Iran	69%	58%	79%	67%
Don't know/Refused	7%	--	--	--

Do you think that Iran is: (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Producing nuclear fuel strictly for its energy needs	6%	2%	6%	10%
Has decided to produce nuclear weapons and is actively working to do so	58%	73%	56%	44%
Is developing some of the technical ability necessary to produce nuclear weapons, but has not decided whether to produce them	30%	24%	35%	32%
Don't know/Refused	6%	--	--	--

How likely do you think it is that Iran will eventually develop nuclear weapons? (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Very likely	49%	63%	44%	39%
Somewhat likely	40%	33%	49%	37%
Not very likely	4%	2%	4%	5%
Not likely at all	3%	0%	2%	8%
Don't know/Refused	3%	--	--	--

Suppose Iran develops nuclear weapons. Do you think that: (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Iran would be likely to use them against Israel because it is so hostile toward Israel	62%	80%	56%	50%
Iran would be deterred from striking Israel for fear of being destroyed in a nuclear retaliatory strike	32%	17%	41%	36%
Don't know/Refused	6%	--	--	--

If Iran develops nuclear weapons, which of the following concerns you the most: (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Iran would actually use nuclear weapons against the US or its allies	44%	57%	39%	35%
This would lead other countries in the region to develop nuclear arms, leading to an arms race	19%	11%	26%	18%
Iran would feel emboldened to pursue aggressive policies toward the US and its allies	24%	26%	23%	23%
None of these	9%	4%	9%	15%
Don't know/Refused	4%	--	--	--

If Iran were to develop nuclear weapons, which TWO of the following do you think is most likely to occur: (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Iran would acrually use nuclear weapons against the US or its allies	47%	61%	40%	38%
This would lead other countries in the region to develop nuclear arms, leading to an arms race	44%	45%	50%	33%
Iran would feel emboldened to pursue aggressive policies toward the US and its allies	52%	60%	54%	39%
Stability would increase, since both Iran and Israel would be deterred by the other's ability to destroy them	8%	5%	10%	10%
Not much will change in the region	15%	8%	16%	23%

In dealing with the problem of Iran's nuclear program, do you think that the US should: (University of Maryland, March 3-7, 2012)

	Total	Republicans	Democrats	Independents
Primarily act by itself	20%	28%	11%	20%
Try to primarily act through the UN Security Council	74%	69%	86%	64%
Don't know/refused	6%	--	--	--

Suppose Israel strikes and Iran retaliates by striking back at Israel, but Iran does not attack any US targets. What do you think the US should do? (University of Maryland, March 3-7, 2012)

11

	Total	Republicans	Democrats	Independents
Provide whatever help Israel requests, including military forces	25%	41%	16%	16%
Publicly support Israel's actions, but do not provide military support	14%	18%	15%	7%
Stay neutral and do not get involved	22%	14%	25%	29%
Stay neutral and actively work to get both sides to stop the fighting	27%	21%	34%	25%
Publicly oppose Israel's actions	2%	1%	3%	1%
Actively distance the US from Israel by stopping military aid	4%	2%	6%	6%
Don't know/refused	6%	--	--	--

As you may know, the US government has recommended that Israel not strike Iran. If Israel strikes anyway, what do you believe the US government's reaction WOULD be? (University of Maryland, March 12, 2012)

	Total	Republicans	Democrats	Independents
It would support Israel diplomatically, but not provide military assistance	32%	35%	43%	15%
It would join the war on Israel's behalf	22%	29%	18%	20%
It would stay neutral	30%	24%	30%	37%
It would punish Israel by reducing its current support to Israel	10%	10%	9%	12%
Don't know/refused	5%	--	--	--

If Israel were to strike Iran's nuclear facilities, in your estimation, how long would an armed conflict between Iran and Israel last? (University of Maryland, March 12, 2012)

	Total	Republicans	Democrats	Independents
days	9%	14%	8%	6%
weeks	12%	15%	11%	10%
months	26%	24%	30%	22%
years	48%	44%	51%	47%
Don't know/refused	6%	--	--	--

If Israel were to strike Iran's nuclear facilities, in your view, how would this affect the Iranian government? (University of Maryland, March 12, 2012)

	Total	Republicans	Democrats	Independents
It would be weakened	42%	48%	41%	35%
It would be strengthened	30%	27%	35%	24%
It would have no effect	21%	22%	21%	23%
Don't know/refused	7%	--	--	--

What do you believe the likely outcome would be if Israel were to strike Iran: (University of Maryland, March 12, 2012)

	Total	Republicans	Democrats	Independents
It would delay Iran's capabilities to develop nuclear weapons by 1-2 years	20%	21%	22%	18%
It would delay Iran's capabilities by 3-5 years	22%	33%	21%	11%
It would delay Iran's capabilities by more than 5 years	18%	19%	18%	18%
It would accelerate Iran's nuclear program	22%	15%	28%	22%
It would have no effect on Iran's nuclear program	9%	7%	9%	11%
Don't know/refused	8%	--	--	--

Is it more important to... (Pew, February 15, 2012)

Prevent Iran from developing nuclear weapons, even if it means taking military action	58%
Avoid military conflict, even if Iran may develop nuclear weapons	30%
Other/don't know	13%

If Israel attacks Iran to stop its nuclear weapons program, what should the U.S. do? (Pew, February 15, 2012)

Support Israel's action	39%
Oppose Israel's action	5%
Stay neutral	51%
Other/don't know	13%

How likely is it that Iran will develop a nuclear weapon in the near future? (Rassmusen Reports, February 4-5, 2012)

somewhat likely	33%
very likely	50%
not very or not at all likely	11%

If Israel attacks Iran, should the United States help Israel, help Iran, or do nothing? (Rassmusen Reports, February 4-5, 2012)

help Israel

48%

Should the US be willing to use military force to prevent Iran from getting nuclear weapons? (Pulse Opinion Research, February 2, 2012)

Yes	49%
No	31%
Not sure	20%

How concerned are you about a terrorist attack on the US by Iran? (Pulse Opinion Research, February 2, 2012)

Very concerned	23%
Somewhat concerned	39%
Not very concerned	25%
Not at all concerned	12%
Not sure	0%

Among likely U.S. voters: Do you believe the U.S. should use military force to prevent Iran from developing nuclear weapons if diplomatic efforts fail? (Rassmusen Reports, November 14, 2011)

Yes	38%
No	35%

Which of the following describes your view of Iran: Iran is an immediate threat to the security of the Middle East, a threat to the security of the Middle East in the future, a potential threat further down the road, or no threat at all? (ADL, October 23, 2011)

	2007	2009	2011
Immediate threat	26%	40%	38%
Threat in the near future	24%	23%	14%
Porential threat further down the road	30%	22%	32%
No threat at all	7%	5%	7%

Do you think that Israel should take military action to keep Iran from developing or trying to develop a nuclear weapons program ? (ADL, October 23, 2011)

	2007	2009	2011
Yes	42%	57%	57%
No	46%	32%	31%

Do you think that the United States should take military action to keep Iran from developing or trying to develop a nuclear weapons program ? (ADL, October 23, 2011)

	2007	2009	2011
Yes	47%	54%	50%
No	39%	34%	44%

If Iran attains nuclear weapons do you believe Iran would use them to attack Israel? (Independent Media Review Analysis, September 2011)

Yes	75.7%
No	12.8%
(DK/refused)	11.5%

If Iran attains nuclear weapons do you believe Iran would use them to attack United States military bases and ships in the Persian Gulf and Middle East? (Independent Media Review Analysis, September 2011)

Yes	69.8%
No	20.6%
(DK/refused)	9.6%

If Iran attains nuclear weapons do you believe Iran would arm terrorists who would use the nuclear weapons to attack the United States? (Independent Media Review Analysis, September 2011)

Yes	79.9%
No	12.0%
(DK/refused)	8.1%

If sanctions against Iran do not work, would you approve or disapprove of using the military to attack and destroy the facilities in Iran which are necessary to produce a nuclear weapon? (Independent Media Review Analysis, September 2011)

	September 2011
Approve	63.5
Strongly approve	39.1
Somewhat approve	24.4
Disapprove	23.3
Somewhat disapprove	8.5
Strongly disapprove	14.8
Don't know/refused	13.2

Which country is the greatest threat to the United States? (Independent Media Review Analysis, September 2011)

	September 2011
Iran	34.8
China	33.7
North Korea	17.6
Russia	3.9
Venezuela	1.3
Other	3.0
Don't know/refused	5.7

Which country is the second greatest threat to the United States? (Independent Media Review Analysis, September 2011)

	September 2011
Iran	28.0
China	16.2
North Korea	29.1
Russia	8.1
Venezuela	4.6
Other	1.6
Don't know/refused	12.4

Please rate using a one to one hundred scale, where one means you have a cold/very unfavorable feeling, one hundred means you have a warm/very favorable feeling and fifty is neutral, your feelings toward Iran. (The Israel Project)

	5/06	5/07	9/07	12/07	8/09	11/10	12/10	2/11	4/11	6/11
Total cold/unfavorable feelings	69%	71%	66%	72%	62%	75%	61%	63%	67%	70%
Total warm/favorable feelings	9%	11%	8%	8%	10%	7%	10%	8%	8%	7%

Iran is currently developing a nuclear weapon. When Iran is able to produce a nuclear weapon, how likely do you think it is that Iran would do each of the following? (McLaughlin & Associates, October 2010)

"Launch a nuclear missile attack on the United States."

Not likely	45.4%
Somewhat likely	34.3%
Very likely	15.4%
Don't know/Refused to answer	4.8%

"Launch a nuclear missile attack on Israel."

Not likely	14.8%
Somewhat likely	35.9%
Very likely	44.0%
Don't know/Refused to answer	5.3%

"Provide nuclear weapons to terrorists."

Not likely	9.2%
Somewhat likely	27.8%
Very likely	57.4%
Don't know/Refused to answer	5.5%

Would you approve or disapprove of the following proposals? (McLaughlin & Associates, October 2010)

"Using the military to attack and destroy the facilities in Iran which are necessary to produce a nuclear weapon, if sanctions do not work."

Approve	59.8%
Disapprove	29.9%
Don't know/Refused to answer	10.3%

"Allowing Israel to attack and destroy Iran's nuclear weapons program facilities, if sanctions do not work."

Approve	58.4%
Disapprove	29.5%
Don't know/Refused to answer	12.1%

Do you agree or disagree with the following statement? "I am strongly opposed to the use of military force by Israel or the United States to attack Iran." (McLaughlin & Associates, October 2010)

Agree	35.9%
Disagree	52.8%
Don't know/Refused to answer	11.4%

If sanctions against Iran fail, and Israel were to attack Iran to stop them from developing a nuclear weapons, in your opinion, would this be an act of self defense, or an act of aggression? (McLaughlin & Associates, October 2010)

Self defense	63.4%
Aggression	25.7%
Don't know/Refused to answer	10.9%

If Israel were to attack Iran to stop them from developing a nuclear weapon, in your opinion, would this endanger the United States, or enhance the security of the world? (McLaughlin & Associates, October 2010)

Endanger U.S.	37.9%
Enhance world security	39.9%
Don't know/Refused to answer	22.2%

Many experts say that Iran is currently developing nuclear weapons. Can the United States be safe with a nuclear Iran? (McLaughlin & Associates, October 2010)

Yes	16.0%
No	75.7%
Don't know/Refused to answer	8.3%

President Obama is pursuing a policy of diplomacy and sanctions to stop the Iran nuclear program. Do you think this policy will succeed? (McLaughlin & Associates, October 2010)

Yes	28.0%
No	58.6%
Don't know/Refused to answer	13.4%

Do you think President Obama's policies toward Iran will stop them from getting nuclear weapons? (McLaughlin & Associates, October 2010)

Yes	12.8%
No	78.5%
Don't know/Refused to answer	8.7%

Do you think President Obama's failure to stop Iran's nuclear program would lead to a nuclear arms race in the Middle East? (McLaughlin & Associates, October 2010)

Yes	50.3%
No	33.8%
Don't know/Refused to answer	15.9%

How serious a threat to the United States do you view the following? "Iran will use its nuclear weapons to threaten the supply of Middle Eastern oil to the United States and its allies." (McLaughlin & Associates, October 2010)

Not a threat	9.8%
Somewhat serious threat	41.2%
Very serious threat	44.6%
Don't know/Refused to answer	4.4%

Which of the following would cause you to support a war with Iran? (60 Minutes/Vanity Fair, September 2010)

Only if Iran attacks U.S. soil	25%
If Iran attacks the U.S. fleet	25%
If Iran tests a nuclear bomb	11%
If Iran attacks Israel	10%
Nothing	24%

Is Iran an ally of the United States, an enemy of the United States or somewhere in between? (Rasmussen, August 2010)

Ally	2%
Enemy	57%
Somewhere in between	37%
Not sure	5%

Iran says that its uranium enrichment program is for developing energy. Is Iran's nuclear program to develop energy or to develop weapons? (Rasmussen, August 2010)

Develop energy	7%
Develop weapons	66%
Not sure	27%

How likely is it that Iran will soon develop nuclear weapons? (Rasmussen, August 2010)

Very likely	53%
Somewhat likely	27%
Not very likely	8%
Not at all likely	2%
Not sure	11%

If Israel attacks Iran, should the United States help Israel, help Iran, or do nothing? (Rasmussen, August 2010)

Help Israel	51%
Help Iran	2%
Do nothing	35%
Not sure	12%

Now that Iran has enriched uranium, do you believe that it will be easier for terrorist groups all over the world to acquire nuclear weapons? (The Israel Project, March 2010)

Definitely	53.0%
Possibly	26.8%
Not sure	7.7%
Unlikely	8.0%
Definitely not	2.0%
Don't know/Refused to answer	2.5%

Now that Iran has enriched uranium, do you believe they will pursue their threat to "wipe Israel off the map?" (The Israel Project, March 2010)

Definitely	33.5%
Possibly	30.5%
Not sure	14.8%
Unlikely	11.2%
Definitely not	5.0%
Don't know/Refused to answer	5.0%

Which statement comes closer to your own opinion... (The Israel Project)

	October 2008	January 2009	August 2009	December 2009	February 2010
With all the problems that America is facing at home now, we should reduce our efforts to stop Iran from getting nuclear weapons.	23%	18%	13%	19%	24%
Even with all the problems that American faces at home now, we must still work hard to stop Iran from getting nuclear weapons.	72%	79%	84%	78%	69%
Don't know/Refused to answer	4%	3%	3%	4%	4%

Do you approve or disapprove of the way George W. Bush is handling the situation with Iran's nuclear weapons program? (Los Angeles Times/Bloomberg, June 24-27, 2006)

Approve	40%
Disapprove	31%
Unsure	29%

Overall, taking into consideration everything you have heard or read about the situation with Iran, do you think Iran will be stopped from getting nuclear weapons through diplomatic solutions, or only through military action, or do you think Iran will eventually get nuclear weapons? (Los Angeles Times/Bloomberg, June 24-27, 2006)

	April 2006	June 2006
Stopped through diplomacy	15%	16%
Stopped through military action	12%	16%
Will get nuclear weapons	61%	56%
Unsure	12%	12%

If Iran continues to produce material that can be used to develop nuclear weapons, would you support or oppose the U.S. taking military action against Iran? (Los Angeles Times/Bloomberg, June 24-27, 2006)

	April 2006	June 2006
Support	48%	52%
Oppose	40%	37%
Unsure	12%	11%

American Public Opinion Polls: Opinion Toward the 2015 Iran Deal and Aftermath