Trump Stretches ‘america First’ On Iran. His Voters Are Going Along With It.

President Donald Trump’s war in Iran is testing the bounds of his “America First” agenda. So far, his supporters are sticking with him.

New results from The POLITICO Poll show that Trump’s 2024 voters are willing to accept the offensive, even as some of them say it violates MAGA principles or breaks his campaign promise not to start new wars. Their support is driven in large part by their unwavering trust in the president and his assurances the U.S. will only be involved “short term.”

But there are signs Trump’s hold could grow tenuous as he intensifies military action. Trump voters are more split on backing the war if it results in more lives lost. The president has called the strikes a success, but America’s increasing military build-up in the Middle East has spurred fears that the intervention will involve ground troops and result in a much longer conflict than expected.

The war has drawn searing rebukes from prominent anti-interventionist voices within the MAGA movement including Tucker Carlson and Megyn Kelly, prompted the resignation of a Trump official earlier this week and fueled concerns over rising oil and gas prices ahead of a midterm election set to hinge on the economy.

“The president has to be careful,” said Barrett Marson, a GOP strategist in Arizona. “If things turn just a little bad or if during the summer we are still entangled, those voices will not only get louder but there will be more of them. Trump needs to stick to his 4 to 6 weeks, which is fast approaching.”

And yet, Trump has retained deep loyalty from his supporters on one of the most consequential decisions of his second term. For now, his base is willing to accept his version of “America First.”

Seventy percent of Trump’s 2024 voters support last month’s strikes, according to the survey conducted from March 13 to 18 by London-based Public First. Meanwhile, 56 percent of former Vice President Kamala Harris’ voters oppose them.

Support for the war cuts across both flanks of Trump’s coalition, from self-identified MAGA voters (81 percent) to those who supported him in 2024 but don’t identify with the movement (61 percent). It’s a rare point of alignment for a bloc that’s splintering on other key issues.

The Trump administration has offered shifting explanations for the rationale — and goals — of its strikes on Iran, ranging from preventing the country from developing a nuclear weapon to regime change.

“What matters most to the American people is having a Commander-in-Chief who takes decisive action to eliminate threats and keep them safe, which is exactly what President Trump is doing with the ongoing successful Operation Epic Fury,” White House spokesperson Davis Ingle said in a statement. “President Trump campaigned proudly on his promise to deny the Iranian regime the ability to develop a nuclear weapon, which is what this noble operation is seeking to accomplish.”

MAGA trusts Trump

The most convincing rationale for voters, the survey found, was that the strikes were necessary to head off Iran’s nuclear capabilities. Among the 44 percent of Americans who support the strikes that killed Iranian Supreme Leader Ayatollah Ali Khamenei, nearly half — 46 percent — say they back the action because the country was developing nuclear weapons.

Trump supporters are even more swayed by that argument. A majority of both MAGA and non-MAGA Trump voters — 54 percent and 56 percent, respectively — say they support the strikes because they believe Iran was developing nuclear weapons. Two-thirds of MAGA Trump voters and more than half of non-MAGA Trump voters believe Iran posed an active national security threat to the U.S. at the time of the attack.

Another explanation for their support: MAGA trusts Trump. Fifty-three percent say they back the strikes because they trust him to do the right thing.

That trust shapes how long his supporters, and his critics, believe the conflict will last. Six of every 10 Harris 2024 voters say they expect the intervention to be closer to a “forever war,” but six of every 10 Trump voters say the opposite, that they expect the intervention to be short, underscoring their confidence in the president’s suggestion that he will keep it contained.

Trump voters also don’t mind so much that the president broke his campaign promise not to start wars in office, a clear sign that they’re willing to accept caveats to what counts as “America First,” as long as it’s being sold by Trump himself.

A 35 percent plurality of Trump 2024 voters — with similar shares among MAGA and non-MAGA voters — say the war in Iran broke that campaign pledge, but was necessary given the change in circumstances. Thirty percent say the war has not broken the pledge, while 21 percent say it broke the pledge unnecessarily and 14 percent are unsure.

Additionally, a plurality of Trump voters, 46 percent, say the war in Iran is in line with MAGA principles.

“MAGA is locked in for Trump. The bigger issue isn’t about him or even Iran, it’s that foreign conflicts expose a real fault line between more hawkish Republicans and a rising isolationist wing,” said Republican strategist Jeff Burton. “That tension is only going to grow as 2028 gets closer, and it’s going to be a defining challenge for whoever tries to take the MAGA mantle.”

Signs of strain

Still, as the war nears its fourth week, the survey suggests there are limits to that support, especially among Republicans who don’t identify so heavily with the MAGA movement.

The growing number of U.S. casualties in particular is a dividing line.

A majority of MAGA Trump voters, 58 percent, say the U.S. must achieve its goals in Iran, even if it means more American lives are lost.

Non-MAGA Trump voters are more split: 44 percent say the same, but 41 percent believe the U.S. must not lose more American lives, even if that means the country’s goals are left unfinished.

There are also signs of concern over whether Trump has a concrete plan for his actions in Iran — an issue that has emerged as a sticking point for lawmakers in Washington, including some anti-interventionist Republicans, who worry that Trump’s lack of a clear exit strategy will only prolong the war.

Fifty percent of non-MAGA Trump voters believe the president does not have a plan, though 31 percent say they trust his actions will resolve the conflict anyway.

The intra-party rift is surfacing in real-time inside Trump’s orbit. The abrupt resignation of Joe Kent, the director of the National Counterterrorism Center, over his opposition to the war drew a sharp rebuke from the White House. Other key voices, from Carlson and Kelly to former Rep. Marjorie Taylor Greene and Trump-friendly podcaster Joe Rogan, have ramped up their criticism of the president.

Still, the president has brushed aside the vocal criticism of him and other staunch backers of the war.

“THEY ARE NOT MAGA, I AM,” he wrote on Truth Social earlier this week. “And MAGA includes not allowing Iran, a Sick, Demented, and Violent Terrorist Regime, to have a Nuclear Weapon to blow up the United States of America, the Middle East and, ultimately, the rest of the World.”

And for now, his supporters appear to agree.

Anna Wiederkehr and Jessie Blaeser contributed.