Sen. Bill Cassidy (R-La.), with his wife Dr. Laura Cassidy by his side, addresses his supporters as he concedes his primary election contest during an event at Boudreaux's Caterers in Baton Rouge, La., on May 16, 2026. Michael DeMocker/Getty Images
Rep. Julia Letlow (R-La.) and Louisiana Treasurer John Fleming ousted incumbent Sen. Bill Cassidy (R-La.) in the Republican primary election in Louisiana on May 16.
Letlow won more than 44.8 percent of the vote, while Fleming received 28.3 percent and Cassidy received 24.8 percent, according to results after 99 percent of the votes were tallied.
