FRANKFORT, Ky. — President Donald Trump is taking direct aim at Rep. Thomas Massie, lining up behind a possible challenger in what could become one of Kentucky’s most high-profile Republican primaries.

Trump has urged Ed Gallrein, a retired Navy SEAL and farmer, to enter the race for Kentucky’s 4th Congressional District. Though Gallrein has not formally declared, Trump described him as a “winner” and indicated he would prefer Gallrein over the incumbent.

Massie has long charted his own course in Washington. Known as a strict constitutional conservative, he often breaks with both parties when legislation conflicts with the Constitution. He has voted against massive spending packages, resisted overseas military interventions, and defended civil liberties, earning him both critics in Congress and admiration from voters who seek principled leaders.

That record has made Massie a fixture in Appalachia, where supporters say he represents principle rather than party politics. Trump’s move to elevate Gallrein is being read locally as another attempt to sideline a lawmaker unwilling to fall in line with the president’s agenda.

“The people here trust Massie because he doesn’t bend,” one Kentucky voter said. “We don’t need a follower. We need someone who will stand firm on the Constitution.” The 4th District leans heavily Republican, meaning the real contest is the GOP primary. Massie recently announced his strongest fundraising quarter yet, suggesting he is prepared to fight. Meanwhile, Trump’s involvement underscores his broader effort to reshape the party by replacing lawmakers who diverge from the MAGA platform.

For many Kentuckians, though, this race will come down to authenticity. Massie’s supporters view him as a steady conservative voice in a noisy political era. The primary will test whether Trump’s backing of a challenger can overcome that reputation in a district where loyalty to principle often outweighs loyalty to personalities.