Louisiana GOP Primary Tests Trump Influence on Party

Louisiana Republicans head to the polls Saturday in a Senate primary that will test President Donald Trump's continued grip on the party and his appetite for punishing those who crossed him. Sen. Bill Cassidy, a two-term incumbent and physician, faces challengers Rep. Julia Letlow and state Treasurer John Fleming after voting to convict Trump during his 2021 impeachment trial tied to the January 6 Capitol attack.

The race comes weeks after Trump-backed candidates defeated five Indiana state senators who resisted the president's push for new congressional maps. In Louisiana, Trump has made clear his preference for Letlow, a 45-year-old House member who won a special election in 2021 following her husband's death from COVID-19 complications. The president has called Cassidy a "flake" and "very disloyal," while praising Letlow as a "total winner" who has "always delivered for Louisiana."

Cassidy, 68, was one of only seven Senate Republicans to support conviction after Trump was impeached by the House for his role in the Capitol riot. He has since sought to mend ties, casting a key vote last year to advance Robert F. Kennedy Jr.'s nomination as Health and Human Services secretary. Yet tensions persist. Cassidy, who chairs the Senate health committee, has publicly criticized aspects of Kennedy's vaccine policies, including changes to the hepatitis B schedule for infants.

An Emerson College poll last month placed Cassidy in third among likely GOP voters, with Letlow and Fleming running close for the lead. If no candidate reaches a majority on Saturday, the top two will meet in a June 27 runoff. Senate Majority Leader John Thune and the National Republican Senatorial Committee have backed Cassidy as a "terrific senator," creating an unusual split with the White House.

Letlow has framed the contest around loyalty, arguing Louisiana voters should not have to question how their senator will vote "when the pressure's on." Fleming, a former congressman, has positioned himself as a staunch Trump ally. Cassidy has countered by pointing to his legislative record and cooperation with the administration on other fronts, while acknowledging his impeachment vote could remain a liability.

The primary reflects Trump's broader pattern of intervening in Republican contests to sideline critics. Observers note the outcome could further signal whether past dissent on January 6 or policy differences now carry lasting costs within the party. Cassidy has emphasized his focus on results over personal loyalty, but voters will decide whether that record outweighs Trump's explicit opposition.