Republican Congressman Thomas Massie is facing a fierce primary challenge in Kentucky after repeated clashes with President Donald Trump, who has endorsed retired Navy veteran Ed Gallrein in an effort to unseat him. Trump has publicly attacked Massie for breaking with the party on major issues, including federal spending, tariffs, military action abroad and efforts to release government files related to Jeffrey Epstein. The race has become a high stakes test of Trump’s dominance within the Republican Party.

Massie argues that his opposition to certain party priorities reflects his commitment to limited government and fiscal restraint, saying he votes with Republicans most of the time but refuses to back legislation that increases debt or expands federal power. Supporters praise his consistency and independence, while critics within his party accuse him of seeking attention and obstructing the broader Republican agenda at a time of narrow control in the House of Representatives.

Gallrein has centered his campaign almost entirely on Trump’s endorsement, presenting himself as a loyal ally who would support the president’s agenda without resistance. The contest has drawn record spending for a House primary, with millions of dollars from outside groups flooding the district with advertising, much of it sharply critical of Massie.

With polling showing a tight race, the outcome could signal whether Republican voters are willing to defy Trump’s wishes. A Massie victory would suggest limits to the president’s influence, while a defeat would reinforce Trump’s power to shape the party by targeting dissenters.