Republican voters have stood behind Donald Trump through just about everything.
They stuck with him through impeachment hearings, indictments, and a media class that never let up.
But a new poll just revealed a crack in that wall of support, and it came at the worst possible time.
Republican Approval Falls From 73 Percent To 60 Percent
A new CNN poll conducted by SSRS surveyed 1,206 adults from September 16 to 17, 2026, and found 73% of Republicans approved of the way Trump was handling the war in March, and now that figure stands at 60%. That is a 13-point drop among the President’s own coalition.
Democrats and independents never gave Trump much credit on this front to begin with. Much of the decline in approval of his handling of Iran comes among Republicans, while views among Democrats and independents have been steadily negative throughout the conflict.
The erosion is sharpest among younger Republicans and those who don’t consider themselves part of the MAGA movement. Among Republican and Republican-leaning adults, approval of Trump’s handling of Iran dips into negative territory among those younger than 45, with 53% disapproving, and among those who say they are not members of the Make America Great Again movement, with 54% disapproving.
Overall support for Trump’s broader foreign policy record is sagging too. Overall, 29% of US adults approve of Trump’s handling of foreign affairs, a new low in CNN polling across both of his terms as president, while 71% say they disapprove, and only 26% say they approve of the president’s handling of the situation in Iran, down from 33% a month after the war began.
Republicans themselves are souring on the “helped America’s standing” argument the administration has leaned on. About half of Republicans now say that his decisions have helped the US’s standing in the world, down 13 points since March.
And it’s not just the Iran fight specifically. The findings came ahead of Trump’s address to the United Nations and an expected meeting with Gulf leaders about the future of the Iran war, and they also come as he is confronting a metastasizing crisis with the Iran-backed Houthis in Yemen.
Patience for an open-ended timeline appears to be running thin across the board. Three-quarters of all adults now say Trump does not have a clear plan for handling the situation in Iran, 78% say that he is not doing enough to end the war, and about 7 in 10 say it’s at least somewhat likely that the conflict will be a long-term one, including majorities across party lines.
The War Was Supposed To Last A Couple Of Weeks
Part of what is driving the frustration is simple: this was never supposed to take this long. Republican voters were told a quick campaign. The war is now in its seventh month.
The Congressional Budget Office put a number on that pain. The CBO estimated earlier in September that the first five months of the war have cost American taxpayers over $38 billion, even though the war was expected to cost between $2 billion and $3 billion per month, a figure that reflects the costs of munitions, military equipment, operations, and surging fuel prices.
That cost is landing on voters at the worst possible time. Democrats and independents have viewed the war negatively since it was launched in February, while soaring energy costs and high inflation have continued to squeeze Americans.
And the pain at the pump is not an abstraction. Diesel prices skyrocketed in September, with the US national average retail price reaching a new all-time high of $6.51 a gallon.
Trump is not backing down from defending the operation. He delivered a speech to the United Nations and defended his decision to launch the war, arguing that the US is winning it.
What Does This Mean For Trump’s America First Mandate?
Diesel prices at record highs and inflation still squeezing family budgets only sharpen that frustration. Working Americans were promised relief from the kind of Bidenomics-driven cost spiral that defined the previous administration. Instead, a foreign entanglement is now adding fuel costs on top of everything else households are already dealing with.
But there’s a difference between Republican voters wanting this war wrapped up and the neoconservative wing of the party wanting it expanded. The Romney-Cheney foreign policy establishment spent decades pushing the country toward exactly this kind of prolonged Middle East commitment, and it rarely ended well for the American families who paid the price in dollars and lives. Voters souring on an open-ended timeline is not an argument for escalation. If anything, it’s a reminder of why Trump’s original instinct to avoid these fights in the first place resonated so strongly with his base.
Trump made his case that the campaign is working and that Iran’s regime is on the back foot. Whether that argument lands with a Republican base that increasingly wants a defined endpoint remains to be seen. What the numbers show clearly is that patience, even among Trump’s most loyal supporters, is not unlimited when a war drags on longer than promised and the receipts keep piling up.
Sources: CNN, SSRS, The Daily Caller, AOL