Louisiana State Treasurer John Fleming has announced a challenge to incumbent Sen. Bill Cassidy in the 2026 Senate race. Fleming cites Cassidy's vote to convict Trump during impeachment and his alignment with the Biden administration as reasons for his campaign. As a former Trump advisor, Fleming positions himself as a staunch conservative. Cassidy's campaign counters Fleming's criticisms, suggesting he is opportunistically seeking a return to Washington. Fleming's entry signals Republican readiness for a competitive primary, with potential implications for Cassidy's re-election strategy in a state that heavily supported Trump in the past.