President Donald Trump is headed to Kentucky this week to rally with Ed Gallrein, his endorsed candidate to take on anti-Israel and isolationist Rep. Thomas Massie (R-KY) in the increasingly heated primary between the two men.

The campaign stop comes at a time when Massie has made himself the face of GOP opposition to the war in Iran — among the litany of other issues on which he has also broken with the president. Massie was one of two lead sponsors of a failed effort in the House last week to stop the war in Iran, while Gallrein said in a statement that the war was justified and would prevent further attacks on U.S. servicemembers and the nation.

In a ruby-red district, Massie’s opposition to the war could cost him politically, as polling shows Republicans have rallied strongly behind the administration and its efforts.

But Massie insists that Republicans  will come to share his stance. And his district has stood behind him for years even as he broke with Trump throughout his first term. The primary will not be until May 19.

For its part, the Republican Jewish Coalition is taking aim at Massie over his opposition to the war in a significant ad campaign.

“America is at war with a fanatical regime that seeks nuclear weapons. American hero Ed Gallrein stands with President Trump, our country and our military,” the RJC ad states. “Thomas Massie? He stands with Iran and radical leftists in Congress, opposing Trump, just like he did on the border and taxes.”

The RJC has spent at least $2.8 million in the race thus far, in its latest attempt to take down one of the GOP’s loudest critics of Israel. Massie, for his part, is leaning into the attacks to drum up fundraising, reposting the RJC ad and saying the group “wants America to be mired in another forever war.”

A Trump-linked super PAC is also set to spend millions opposing the incumbent; that group’s ads have also highlighted Massie’s breaks with Trump on Iran, focusing on his opposition to the Operation Midnight Hammer strikes last summer.

Massie has framed the primary as a test of “whether the Global Military Industrial Complex and Israel’s government controls the United States” and said “the Israeli lobby has spent $5 million against me because I don’t support sending our troops to fight their war.”

He’s made no secret on the campaign trail of Trump’s antipathy towards him, offering a mocking Trump impression at a campaign launch event last month — apparently betting that his maverick tendencies will help, or at least won’t cost him, among his voting base.

Gallrein’s campaign has leaned into Massie’s perceived disloyalty to Trump, and his decision to side with Democrats and the far-left on a range of key priority issues, making that a central issue of his campaign.

Some Massie supporters are reportedly growing fed up with his breaks with Trump and his focus on high-profile controversial issues, with one Gallrein supporter complaining to NOTUS that Massie’s focus on releasing Department of Justice files on the Jeffrey Epstein case doesn’t help the individual in any way, or bring down costs, and another worrying that Massie’s antipathy toward Trump will deprive the district of essential services.

As of the end of 2025, Massie maintained a significant fundraising lead over Gallrein, $2.5 million to $1.2 million. Massie closed the year with $2 million cash on hand, compared to $933,000 for Gallrein. 

Massie’s campaign has spent significantly on an ad blitz that aims to portray the Trump-backed Gallrein as “woke Eddie,” a supporter of diversity, equity and inclusion policies and gender-affirming surgeries for transgender youth.