Cassidy Loses Senate Race After Voting Against Trump

Senator Bill Cassidy lost his Republican primary on Saturday, May 16, 2026. This is the first time a senator who voted to convict Donald Trump has been defeated in a primary.
By Newsroom | Politics, US Senate |

Senator Bill Cassidy of Louisiana has failed to advance past the Republican primary, ending his bid for a third Senate term. The defeat, confirmed on Saturday, May 16, 2026, marks a significant moment in the ongoing political repercussions for Republicans who crossed Donald Trump. Cassidy was one of seven GOP senators who voted to convict Trump during his second impeachment trial in 2021, an act that ultimately sealed his political fate within the party.

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The election results demonstrate a stark consequence for dissent within the modern Republican electorate, particularly when opposed by Trump's direct intervention.

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The primary saw two Trump-aligned candidates advance to a runoff election: Representative Julia Letlow, who received Trump's explicit endorsement, and State Treasurer John Fleming. The runoff is scheduled for June 27. Cassidy's failure to secure a spot in this final contest underscores the potent influence Trump continues to wield over GOP primary voters.

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Cassidy’s vote to convict Trump followed the January 6th Capitol attack, an event that deeply divided the party. Trump, in turn, had openly called for Cassidy's ouster. This campaign against Cassidy was not limited to just the impeachment vote; Trump also reportedly opposed Cassidy's stance on the nomination of wellness influencer Casey Means for US Surgeon General, leading to the withdrawal of her candidacy and further antagonism towards the senator.

The defeat of Senator Cassidy echoes similar outcomes for other Republicans who have shown disloyalty, as defined by Trump, in recent electoral cycles. Reports suggest a pattern where senators who broke with Trump on key issues, such as the impeachment vote or attempts to block Trump-backed legislation, have faced significant electoral challenges. Cassidy’s departure from the Senate, after a two-decade career in public office including time in the House and the Louisiana State Senate, signifies a continuing trend of Trump’s ability to reshape the Republican party by targeting and removing dissenting voices.

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Frequently Asked Questions

Q: Why did Senator Bill Cassidy lose his Republican primary on May 16, 2026?
Senator Cassidy lost because he voted to convict Donald Trump during his second impeachment trial in 2021. This decision made him unpopular with many Republican voters who support Trump.
Q: Who will run for Senator Cassidy's seat in the runoff election?
Representative Julia Letlow and State Treasurer John Fleming will run in the runoff election for Senator Cassidy's seat on June 27. Both candidates are supported by Donald Trump.
Q: What does Senator Cassidy's defeat mean for the Republican party?
Senator Cassidy's loss shows that Donald Trump still has a lot of influence over Republican voters. It also shows that Republicans who go against Trump may face challenges in future elections.
Q: What happens next for Senator Cassidy's seat?
The Republican primary runoff election for Senator Cassidy's seat will be held on June 27. The winner will likely face the Democratic candidate in the general election later this year.