Republican Louisiana senator in tough primary after Trump backs opponent

Key Points:

• Louisiana's Republican Senator Bill Cassidy, who voted to impeach Trump and later tried to reconcile by supporting Robert F. Kennedy Jr's nomination, faces a tough primary challenge after Trump endorsed Julia Letlow to run against him.
• Cassidy, despite being a three-term incumbent in a deeply Republican state, is trailing in polls behind Letlow and John Fleming, both of whom have aligned themselves with Trump.
• Trump's active campaign against Cassidy reflects his broader strategy of punishing Republicans who oppose him, as seen in recent primary defeats of other anti-Trump Republicans.
• Changes to Louisiana's primary system, favoring staunch pro-Trump candidates, have further disadvantaged Cassidy, making it harder for him to advance without Trump's backing.
• Cassidy aims to secure a top-two finish to reach a runoff, but the strong pro-Trump sentiment among Republican voters and the president's opposition pose significant challenges to his re-election.