President Donald Trump’s late-Saturday endorsement of a potential primary challenger to Sen. Bill Cassidy was not an impulsive jab, but the culmination of a years-long breach that has never healed inside Louisiana Republican politics.
Trump’s message was explicit, personal, and unmistakably tied to Cassidy’s decision to side with Democrats during Trump’s 2021 impeachment trial. In a Truth Social post that immediately reverberated through GOP circles, Trump threw his full weight behind Rep. Julia Letlow, even though she has not formally entered the race.
“Should she decide to enter this Race, Julia Letlow has my Complete and Total Endorsement. RUN, JULIA, RUN!!!I know Julia well, have seen her tested at the highest and most difficult levels, and she is a TOTAL WINNER!”
Both Politico and NBC News characterize the endorsement as directly linked to Cassidy’s impeachment vote, a point reinforced by Trump’s long history of singling out the seven Republican senators who voted to convict him after January 6. Cassidy was one of them, and unlike some of his colleagues, he has continued to publicly defend that vote.
In February 2021, Cassidy framed his decision as a constitutional obligation rather than a political calculation, language that remains politically radioactive among Louisiana Republican primary voters.
“Our Constitution and our country is more important than any one person. I voted to convict President Trump because he is guilty.”
That vote has never stopped haunting Cassidy. According to NBC News, GOP operatives close to Letlow indicated she would only consider entering the race if Trump committed to backing her, a condition Trump has now clearly met. The same reporting notes that Cassidy was privately told by senior Trump-world figures that an endorsement would not be forthcoming for his re-election bid.
Letlow’s response to Trump’s endorsement carefully avoided a formal announcement but left little doubt that she is seriously weighing a run.
“I’m honored to have President Trump’s endorsement and trust. My mission is clear: to ensure the nation our children inherit is safer and stronger.This United States Senate seat belongs to the people of Louisiana, because we deserve conservative leadership that will not waver.”
The phrase “will not waver” mirrors language used repeatedly in post-impeachment primary challenges nationwide, and it reflects a broader Trump-aligned critique of Republicans who broke ranks during impeachment and later sought to straddle both sides of the party divide.
Cassidy, for his part, has attempted to emphasize his cooperation with the Trump administration in recent months, particularly on health policy and committee work, as the reader will note on this pinned tweet from October on Cassidy’s account:
Still, as Politico notes, Trump’s endorsement of a challenger, declared or not, dramatically alters the political terrain. Even in a state rated “Solid Republican,” a Trump-backed primary challenge changes donor behavior, activist enthusiasm, and media coverage overnight.
Cassidy insists he is undeterred, publicly stating that he is “proudly running for re-election” and confident of victory should Letlow enter the race. But Trump’s intervention signals something more enduring: in Trump’s Republican Party, impeachment votes are not ancient history — they are active political liabilities.
Whether Letlow ultimately runs or not, the endorsement alone sends a clear warning to incumbents nationwide. For Republicans who voted to convict Trump, the reckoning is not over, and in Louisiana, it may just be beginning.
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