WASHINGTON — A recent poll indicates that as Republican voters learn more about the interim peace agreement with Iran, their support for it diminishes. Initially, registered Republican voters favored the deal by a significant margin of over 3-1 (62% to 20%), according to a JL Partners survey.
However, when asked about the specifics of the memorandum signed by President Trump last week, only 32% believed it was a “good deal.” In contrast, 44% regarded it as a “bad deal,” while another 15% remained neutral.
Particular concerns arose regarding a clause that permits the sale of Iranian oil by waiving sanctions, along with the U.S. agreement to refrain from imposing new penalties during a 60-day negotiation period.
More than half (57%) of the Republican respondents expressed less support for the deal upon learning it would alleviate sanctions without requiring Iran to cease its funding for terrorist groups in the Middle East or dismantling its nuclear and missile programs.
At a G7 meeting, President Trump countered the criticism, saying, “If other countries have agreements, it’s a little bit unfair that they don’t have them. We’re going to give Saudi Arabia missiles, but… [Iran] Are they not available? It doesn’t work like that.”
Almost half (48%) of those surveyed indicated they would be unlikely to back a peace deal committing Iran to $300 billion in reconstruction funds. Despite this, Trump and Vice President J.D. Vance asserted that some of those funds would be allocated for U.S. agricultural products.
A significant 63% of Republican voters insisted that no agreement should proceed unless Iran hands over its enriched uranium and dismantles its nuclear sites. There’s a widespread belief that Iran’s stockpile of around 1,000 pounds of highly enriched uranium may have been destroyed after U.S. airstrikes on three nuclear facilities in June 2025, and its status is likely to complicate ongoing discussions.
Furthermore, over half (52%) agreed that Israel should have the right to attack Hezbollah in Lebanon, even if it jeopardizes a deal with Iran. However, only 30% prioritized reaching an agreement to reopen the Strait of Hormuz.
Although the memorandum facilitated the reopening of the Strait of Hormuz, concerns about mines in the central strait linger. President Trump has often criticized Israel’s actions in Lebanon but recently blamed Iran, warning of severe repercussions if Iran fails to control Hezbollah.
When asked who emerged victorious from the conflict, a mere 44% of Republican respondents felt the U.S. had won. In comparison, 19% believed Iran had the advantage, with 31% saying it ended in a tie or with no clear winner.
Republican opinions on who benefited from the deal were split: 40% thought the U.S. “did better,” while 36% argued that Iran gained peace, and 24% were uncertain.
The JL Partners survey sampled 1,033 registered Republican voters from June 19 to 21, with a margin of error of plus or minus 3 percentage points.
