Poll Finds Republican Support for Iran Deal Dropped from 62% to 32% After Details Released

Republican voters backed a preliminary peace deal with Iran by a wide margin before hearing its terms but turned against it once details emerged, according to a poll reported by the New York Post. The J.L. Partners survey of 1,033 registered Republican voters, conducted June 19-21 with a margin of error of plus or minus 3 percentage points, showed 62 percent supported the memorandum of understanding before learning specifics and 20 percent opposed it.

After details were presented, 32 percent called it a good deal, 44 percent called it a bad deal and 15 percent said it was neither. The memorandum waives sanctions to permit sales of Iranian crude oil and commits the United States not to impose new penalties during a 60-day negotiating period.

Fifty-seven percent of respondents said they would be less inclined to support the agreement after learning it does not require Iran to stop funding terrorist proxies or to dismantle its nuclear and ballistic missile programs.

Forty-eight percent said they would be less likely to back a deal that included $300 billion in reconstruction funds for Iran. Sixty-three percent said they oppose any agreement unless Iran surrenders its enriched uranium and dismantles its nuclear facilities. Iran’s stockpile consists of nearly 1,000 pounds of highly enriched uranium.

U.S. airstrikes hit three Iranian nuclear sites in June 2025. The memorandum helped reopen the Strait of Hormuz, though the central channel remains subject to concerns about mines. Fifty-two percent of respondents said Israel should be allowed to attack Hezbollah in Lebanon even if it jeopardizes the deal, while 30 percent said reopening the strait should take priority.