Louisiana Republicans Vote Saturday on Whether to Boot Bill Cassidy — Trump's Revenge Tour Gets Its Biggest Test Yet

The Setup

Louisiana Republicans vote Saturday in a three-way Senate primary that is — depending on who you ask — either a loyalty test for the GOP or a referendum on whether independent judgment still has a place in the Republican Party.

Sitting Senator Bill Cassidy is fighting to keep his job against Congresswoman Julia Letlow and former Congressman and Trump White House aide John Fleming. Trump has endorsed Letlow. Cassidy has zero presidential cover.

According to MS Now, the last time Louisiana voters booted a sitting U.S. senator was nearly 100 years ago. PBS News confirmed the same benchmark.

Why Trump Wants Cassidy Gone

This goes back to February 2021. Cassidy voted to convict Trump in his second impeachment trial — one of only seven Republican senators to do so. His statement at the time was blunt: "Our Constitution and our country is more important than any one person. Trump was guilty."

That was the original sin. But it didn't stop there.

Cassidy, a physician by training, publicly grilled Robert F. Kennedy Jr. during his HHS confirmation hearings over Kennedy's dismissal of basic vaccine science. He ultimately voted to confirm Kennedy — but the friction was public and pointed. He has since called out several of Kennedy's vaccine policy decisions, according to MS Now, which earned him enemies inside the MAHA movement.

The final straw came last month. Trump blamed Cassidy for killing the nomination of Casey Means as surgeon general. Means lacked a valid medical license. Multiple senators — NOT just Cassidy — raised concerns. Trump yanked her nomination and pointed the finger squarely at Cassidy anyway.

Trump then posted on Truth Social calling Cassidy "a very disloyal person" who was playing "political games," and urged Louisiana Republicans to vote him "OUT OF OFFICE," according to MS Now.

Cassidy's response: "I am loyal to the United States of America."

The Race Itself

Despite Trump's full-throated endorsement of Letlow — MS Now reported Trump called it his "complete and total endorsement" during a recorded message — there is no clear leader in the race, according to PBS News.

Trump won Louisiana by 22 points in 2024. He has spent real political capital on this race. His social media broadsides against Cassidy have been relentless. Yet there remains no clear frontrunner. Cassidy's constituent service and incumbency continue to matter, or Trump's grip on the base is slightly looser than advertised when an actual Republican senator is the target.

Fleming has positioned himself as the "very conservative" alternative, with Fox News reporting he hammered both Cassidy and Letlow in advertising — attacking Cassidy for disloyalty and hitting Letlow over stock trading that allegedly benefited from her committee work.

What the Media Is Getting Wrong

Left-leaning outlets like the New York Times and AP News are framing this almost entirely as a "Trump revenge" story — which is accurate, but incomplete. Cassidy's concerns about RFK Jr.'s vaccine positions weren't partisan nonsense. They were a physician raising legitimate questions about someone put in charge of the nation's health infrastructure.

Fox News, meanwhile, has given heavy airtime to Fleming and the anti-Cassidy messaging without examining whether the Casey Means situation — the match that lit this particular fire — was actually Cassidy's fault. Multiple senators opposed her nomination. Blaming one man was convenient politics, not accurate accounting.

PBS News gave the most balanced ground-level reporting, showing actual Louisiana voters — some backing Letlow because of Trump, others still undecided — which undercuts the simple "Trump says jump, Louisiana says how high" narrative.

The Bigger Picture

MS Now reported this race is part of a broader "monthlong revenge tour" Trump is running against Republicans deemed insufficiently loyal. Last week he successfully ousted five Indiana state senators who blocked his redistricting push. Next week he's targeting Rep. Thomas Massie in Kentucky.

But Senate seats are different. Harder to replace. Higher stakes. If Cassidy survives Saturday, every Republican in Congress gets a message: Trump's endorsement against an incumbent isn't a death sentence.

If Cassidy loses, the message is the opposite — and it's loud.

What This Means for Regular People

If voters reward pure loyalty over actual governing — if a senator gets kicked out for asking hard questions about a cabinet nominee who literally didn't have a medical license — then the Senate stops being a check on anything.

Republican voters in Louisiana aren't just picking a senator Saturday. They're deciding what kind of Republican Party they want. One where dissent gets you fired, or one where doing the job — even when it's uncomfortable — still counts for something.