President Donald Trump delivered a scorching election-day message to Louisiana voters on Saturday, calling Sen. Bill Cassidy “a disloyal disaster” and urging Republicans to vote for his endorsed challenger, Rep. Julia Letlow.
The Truth Social broadside landed as voters across Louisiana headed to the polls for the Republican Senate primary on May 16, 2026.
Trump did not mince words, calling Cassidy “a sleazebag, a terrible guy” who is “BAD FOR LOUISIANA.”
He predicted the incumbent senator is “going to get CLOBBERED.”
President Trump called Sen. Bill Cassidy a “disloyal disaster” on Louisiana primary day and urged voters to back Julia Letlow.
— TrumpTruthOnX (@TrumpTruthOnX) May 16, 2026
The attack was years in the making. Cassidy was one of seven Republican senators who voted to convict Trump in his second impeachment trial in 2021 following January 6.
Trump has never forgotten that vote, and Saturday’s primary is his chance to make Cassidy pay for it.
As Fox News reported:
President Trump blasted Sen. Bill Cassidy as a “disloyal disaster” and urged Louisiana Republicans to choose Rep. Julia Letlow in the GOP primary.
The report tied Trump’s election-day attack directly to Cassidy’s vote to convict him in the 2021 impeachment trial.
Cassidy’s trouble with the Trump base goes beyond one old vote.
He has also clashed with HHS Secretary Kennedy over vaccine policy, despite helping Kennedy get confirmed.
Letlow is the Trump-endorsed challenger, while Louisiana State Treasurer John Fleming is also in the Republican primary field.
The primary is therefore not just a normal incumbent reelection fight.
It is a direct test of whether Louisiana Republicans want to reward Cassidy after the impeachment vote or move to the candidate Trump says will never let them down.
Trump’s framing turns Cassidy’s record into the ballot question.
ADVERTISEMENTFor MAGA voters, the issue is whether a senator can cross Trump on impeachment and still expect the base to carry him through another term.
That is why Trump’s Saturday morning post landed with such force before polls closed.
The impeachment vote was not Cassidy’s only break from the Republican base.
He also supported the 2021 bipartisan infrastructure law during the Biden administration, a bill that many conservatives viewed as a bloated spending vehicle for Democrat priorities.
More recently, Cassidy clashed publicly with HHS Secretary Kennedy over vaccine policy.
That fight came despite Cassidy helping Kennedy get confirmed in the first place.
Trump’s endorsed candidate, Rep. Julia Letlow, has run as the clear Trump-aligned challenger in the race.
Trump called Letlow a winner who would never let Louisiana voters down.
A current Fox News share carried the Trump-Cassidy primary fight as Louisiana voters headed to the polls.
— Marcia Sessler (@MarciaSessler) May 16, 2026
As the Daily Wire reported, Trump took one last shot at Cassidy as Louisiana voters headed to the polls and urged support for Letlow.
Louisiana State Treasurer John Fleming is also running in the GOP primary field, but Trump’s endorsement of Letlow has drawn the sharpest contrast with Cassidy.
The Washington Examiner reported:
The Louisiana primary fits into President Trump’s broader push to defeat Republicans he views as disloyal.
The race has centered on Cassidy’s vote to convict Trump after January 6, a vote that has followed him into his reelection fight.
Trump’s Saturday message attacked Cassidy personally and politically, while urging Louisiana voters to line up behind Letlow.
The move is unusual because Trump is trying to remove a sitting Republican senator in a primary.
That is exactly why this race matters beyond Louisiana.
It is another test of whether Republican voters still punish officials who crossed Trump at the biggest moments.
Cassidy has tried to survive the backlash, but Trump is making sure voters remember the impeachment vote before they cast ballots.
The race is also a warning to the rest of the Senate GOP.
ADVERTISEMENTTrump is showing that loyalty votes do not disappear just because Washington wants to move on.
The ballot box is where that memory becomes power.
If Letlow surges, every other Republican who crossed Trump will see the message immediately.
That effort has already claimed political casualties. Several of the Republicans who voted to impeach Trump in the House or convict him in the Senate have since retired, lost primaries, or been driven out of office entirely.
Cassidy chose to stay and fight. Saturday’s results will show whether Louisiana Republican voters agree with his decision or with the President who told them to send him packing.
Results are expected Saturday night.
