Trump-Backed Letlow Advances to Louisiana Senate Runoff, Eliminating Incumbent Cassidy

In a significant shift in the Republican Senate landscape, Rep. Julia Letlow and Louisiana State Treasurer John Fleming advanced to a runoff election, eliminating incumbent Sen. Bill Cassidy in the state’s primary. The result marks a major victory for President Trump, who had heavily endorsed Letlow and criticized Cassidy as disloyal for his vote to convict Trump in the 2021 impeachment trial. Cassidy’s elimination, despite support from Senate leadership, underscores the enduring influence of the president within the party and the vulnerability of Republicans who break ranks with his agenda.

Cassidy’s campaign struggled against a dual challenge from Letlow and Fleming, both of whom positioned themselves as more faithful conservatives aligned with Trump’s MAGA movement. Letlow, a first-term congresswoman, highlighted Cassidy’s conflicts with Health Secretary Robert F. Kennedy Jr., while Fleming emphasized his own conservative credentials. The primary also occurred amid procedural changes in Louisiana, where Governor Jeff Landry switched from an open "jungle" primary to a closed partisan primary, a move Cassidy’s campaign claimed disadvantaged him. With Democratic nominee Jamie Davis likely to face a steep uphill battle in the solidly red state, the winner of the GOP runoff is projected to secure the Senate seat in November.