Senator Bill Cassidy is trailing in polls and prediction odds in the Louisiana Republican Senate primary against his Trump-backed challenger Representative Julia Letlow and state Treasurer John Fleming. Cassidy, one of the seven Republican senators who voted to impeach Trump following the January 6, 2021, U.S. Capitol riot, is facing two conservative rivals in the May 16 primary. The primary tests whether Trump’s once iron grip on GOP primary voters has softened amid his waning nationwide