Iran war started unpopular. By fall, two-thirds still disapproved

The Iran war never had majority support among U.S. adults. The longer it ran, the worse the numbers looked.

Pew Research Center surveys from March to early October 2026 found disapproval of President Donald Trump's handling of the conflict rising from 61% to 65%. The share calling the first use of force the right decision slipped to 34%. A July Chicago Council survey found 68% said the war was not worth its costs. Election Day voters in the AP Voter Poll still split by party. Overall, most called the war the wrong decision. The path is clear. It was unpopular at the start. It grew more so over time. Republican support softened at the edges.

Disapproval started high and moved higher#

From the first weeks of U.S. military action against Iran, national surveys showed more Americans calling the use of force the wrong decision than the right one. A Pew Research Center survey of 3,524 adults ran March 16-22, 2026. It found that 59% said the United States made the wrong decision in using military force in Iran. Thirty-eight percent said it was the right decision. Sixty-one percent disapproved of how Trump was handling the conflict. Thirty-seven percent approved.

By late September and early October, Pew's follow-up among 5,062 adults (Sept. 28-Oct. 4, 2026) found disapproval of Trump's handling at 65%. Approval was at 33%. The share saying the first decision to use force was right fell to 34%, down 4 points from March. The drop in approval of Trump's handling came from Republicans and Republican-leaning independents. Sixty-nine percent approved in March. Sixty-three percent approved in the October survey. Democrats stayed near 9% approval in both waves.

Views of how long the fight would last also darkened. In March, 43% thought the operation would end in six months or less. In the October survey, only about one in five expected an end within six months. Forty-seven percent thought the fighting would last more than another year. Thirty percent expected another six to 12 months.

• March 2026
• October 2026

0%

20%

40%

60%

80%

All adultsMarch 2026: 37%October 2026: 33%

RepublicansMarch 2026: 69%October 2026: 63%

DemocratsMarch 2026: 9%October 2026: 9%

All adultsRepublicansDemocrats

Source: Pew Research Center, Oct. 8, 2026

Show the numbers

Group	March 2026	October 2026
All adults	37%	33%
Republicans	69%	63%
Democrats	9%	9%

"Not worth the costs" joins the trend#

The 2026 Chicago Council Survey ran July 10-21 among 2,156 adults. It asked a cost-benefit question rather than a right/wrong decision question. Sixty-eight percent said the war had not been worth the costs to the United States. Thirty-one percent said it had. Ninety-one percent of Democrats and 76% of independents said it was not worth it. Sixty-three percent of Republicans said it was worth fighting. That included 77% of self-described MAGA Republicans and 41% of non-MAGA Republicans.

The Council report cited a Center for Strategic and International Studies estimate that U.S. war costs ran between $34 billion and $42 billion. That covered personnel, munitions, equipment, fuel and related items. It also noted 18 U.S. service members killed and 624 wounded since Feb. 28 in the figures it used. Those casualty and dollar figures are the Council's citations of CSIS and related counts. They are not an independent 567 Politics tally. A May 2026 Council survey, summed up in the same July report, found majorities saying the war was bad for Americans' cost of living (86%), world relations (72%), reputation abroad (72%) and national security (65%).

Threat views did not move in step with those judgments. Forty-nine percent of adults called Iran's nuclear program a critical threat in 2026. That matched the Council's 2023 reading, even after the June 2025 strikes and months of fighting. Republicans (68%) remained far more likely than Democrats (35%) or independents (42%) to call the program a critical threat. A Washington Post-Ipsos finding cited by the Council said only 31% of Americans were confident the war would stop Iran's nuclear development. Sixty-six percent doubted that goal would be met.

What voters said on Election Day#

The November 2026 midterms came after months of weak approval numbers. The AP Voter Poll found about six in ten voters called the Iran war the wrong decision. Roughly one-third said the war was crucial to their congressional vote. That was below cost of living and government corruption, as 567 Politics reported. Nearly all voters who backed Democratic House candidates opposed the war. About four in five who backed Republican candidates supported it. Trump later said the war was "a part" of Republican losses. Allies and critics disputed how large a part.

That Election Day split matters for reading "Americans are tired of the war." National adult surveys show clear majority opposition. The midterm electorate still sorted heavily by party. Fatigue among Democrats and many independents was overwhelming. Republican voters remained mostly supportive. Some Republican elites and younger Republicans grew more critical. That pattern also shows up in Israel-support polling among younger Republicans and in fights over AIPAC spending and Massie's primary.

Concerns: prices, casualties, ground troops#

Pew's October 2026 survey asked how concerned Americans were about specific outcomes. Seventy-three percent were extremely or very concerned about higher gas and fuel prices. Seventy-one percent were concerned about American troops being wounded or killed. Fifty-eight percent were concerned about the United States sending ground troops into Iran. Forty-nine percent were concerned about terrorist attacks in the United States. Thirty-eight percent were concerned about a shortage of weapons for the U.S. military. Democrats were more concerned than Republicans about gas prices and casualties. Majorities in both parties still named those two items.

Concern about ground troops remained higher among Democrats (72%) than Republicans (43%). Chicago Council polling in July 2026 found 65% overall opposed sending U.S. troops to overthrow Iran's government. That included 84% of Democrats and 71% of independents. Fifty-six percent of Republicans supported that option. Trump has said he would not commit ground forces, according to the Council's account. That puts some Republican survey respondents to the right of the president's stated force plan.

An earlier Reuters/Ipsos survey after the June 21, 2025, strikes found 60% disagreed that U.S. airstrikes made America safer. Sixty-nine percent said the United States should not join Middle East military action unless America is directly threatened (Ipsos release). Those early readings already pointed away from a lasting rally effect.

Hawks' case and restraint replies#

Supporters of the campaign argue that Iran's nuclear program and missile capacity threaten U.S. forces and partners. They say cutting those capacities was a fair use of force. They say polls often sour during wars that later look needed in hindsight. Rubio has told Congress the mission was not regime change. He has said sustained offensive strikes inside Iran under Operation Epic Fury had ended. He has also defended continued "defensive" actions. He has warned that war-powers votes encourage Tehran to wait out Washington. Those arguments are also examined in coverage of Rubio and America First critics.

Restraint voices answer that majority "wrong decision" and "not worth it" findings show the public rejected the trade. They also cite rising duration expectations and top concerns about prices and casualties. They point to war-powers and funding fights, including bills tracked in funding-cutoff reporting. They point to Democratic leaders under pressure to match antiwar words with spending choices, as in the Schumer-Jeffries funding test story. Vice President JD Vance's post-midterm comments distancing the party from the war, covered in prior reporting, gave Republican skeptics a high-profile echo. That did not convert most Republican voters in the AP Voter Poll.$$

Negotiating red lines still have majority support#

Even while judging the war not worth its costs, Americans in the July 2026 Chicago Council survey drew hard lines on a settlement. Eighty percent said it would be unacceptable for the United States to allow Iran to keep developing its ballistic missile program. Seventy-four percent said the same about Iran keeping its enriched uranium stockpile. Sixty-eight percent opposed Iran keeping control of the Strait of Hormuz. Sixty percent said paying Tehran for damage to civilian sites would be unacceptable. On the other side, 70% said allowing Iran to export oil and petroleum products globally would be an acceptable compromise. Fifty-eight percent said a U.S. pledge to prevent further Israeli military action in Lebanon would be acceptable.

Those answers describe a public that wants out of an open-ended fight. The same public still rejects a deal that leaves Iran with missiles, enriched uranium or a grip on the strait. Diplomats and lawmakers who treat "end the war" polling as a blank check for any deal are reading past that second half of the survey. Hawks who treat "no missiles, no HEU" majorities as a mandate for endless bombing are reading past the 68% "not worth it" finding. The full record is mixed by design. People are tired of the war. They are not ready to grant Tehran its preferred terms.

Eight in 10 Americans in a Reuters-Ipsos finding cited by the Council expected the war to continue for a long period. Only 16% thought it would end in weeks. Pew's October reading, with 47% expecting more than another year of fighting, points the same way. Duration expectations matter. Wars that the public expects to drag on lose support faster than short campaigns. Americans already lived that pattern in Iraq and Afghanistan, according to the Council's historical tables.

Methods note#

Pew's March and October 2026 surveys used the Center's American Trends Panel of U.S. adults. The Chicago Council July survey used Ipsos KnowledgePanel with a +/-2.2-point margin for the full sample. Reuters/Ipsos June 2025 used KnowledgePanel with a +/-3.2-point margin among 1,139 adults. The AP Voter Poll interviewed Election Day and early voters. It is not the same as an adult population survey. Where this article cites CSIS cost estimates or casualty counts through the Chicago Council, readers should check updated primary releases from the Defense Department and budget offices.

Approval can rebound if fighting stops, if a deal holds, or if a new crisis reframes the stakes. Subgroup samples are smaller and carry larger error. Pew, Chicago Council, Ipsos and the AP Voter Poll ask different groups and wordings. This article compares them as separate snapshots. It does not blend them into one index.

The evidence through early November 2026 supports a careful headline. The Iran war remained broadly unpopular with U.S. adults from March through October. Republican approval softened at the margins. Most adults said the war was not worth its costs. Midterm voters who opposed the war outnumbered supporters overall. They still divided by party. That is war fatigue measured in surveys. It is not a call to cut all foreign ties. It is not proof that any single bill will pass or that talks will succeed.

Differing perspectives

Was the U.S. decision to use military force against Iran the right call?

Each position is summarized as its supporters make it, with equal weight and in alphabetical order. A summary is not an endorsement; the evidence for each is weighed in the story above.

• End the fighting, keep hard red lines

  Who holds it: Adults in Chicago Council polling who say the war was not worth its costs yet reject missile and enrichment concessions

  A third position accepts that the war has cost too much while insisting any deal still block Iran's ballistic missiles, enriched uranium stockpile and control of the Strait of Hormuz. Holders want talks that reopen oil exports and limit further regional fighting, not a settlement that leaves those capabilities intact. They separate fatigue with the war from acceptance of Iran's preferred terms.

  In their words: Chicago Council on Global Affairs, July 10-21, 2026 survey ↗

• It was the right decision

  Who holds it: Most Republicans in Pew and Chicago Council surveys, and administration officials defending the campaign

  Supporters argue that allowing Iran to keep enriching uranium and fielding missiles would leave U.S. forces and partners more exposed. They say cutting those capabilities was a legitimate use of force in the national interest, that Republicans still largely call the decision right, and that ending pressure midstream would reward Tehran. They treat soft approval numbers as wartime politics rather than proof the mission was mistaken.

  In their words: Secretary of State Marco Rubio remarks via RFE/RL ↗

• It was the wrong decision

  Who holds it: Most adults in Pew surveys, Democratic leaders and restraint Republicans such as Rep. Thomas Massie

  Opponents argue the war raised prices, risked U.S. lives and failed to produce a durable nuclear outcome the public trusts. They cite Pew findings that majorities called the use of force the wrong decision and disapproved of how the president handled it, and Chicago Council findings that most adults said the war was not worth its costs. They say ending or tightly limiting the campaign matches what voters told pollsters.

  In their words: Pew Research Center survey, Sept. 28-Oct. 4, 2026 ↗

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