Bill Cassidy clashes with NRSC over campaign funding as Louisiana primary heats up

Sen. Bill Cassidy accused the National Republican Senatorial Committee of shortchanging his reelection bid during a phone call that ended with a sharp rebuke from the committee's executive director, Punchbowl News reported Friday. The Louisiana Republican, one of seven GOP senators who voted to convict Donald Trump after his second impeachment in January 2021, will face voters for the first time since that vote when the state holds its May 16 partisan primary.

NRSC Executive Director Jennifer DeCasper responded to Cassidy's complaints with a profanity-laced retort, telling him he should not have joined Democrats and six other Republican senators in voting to convict Trump, the Daily Caller reported, citing Punchbowl News and multiple anonymous sources. The NRSC declined to comment.

The confrontation exposes a fault line inside the Republican Party's Senate campaign operation. The NRSC has publicly endorsed Cassidy and released video ads supporting him. Senate Majority Leader John Thune headlined a January fundraiser in Baton Rouge that brought in $652,000 for the incumbent's campaign. Cassidy's office said in January that he and allied groups held a combined war chest of $26 million.

Yet behind the scenes, the committee's top staffer apparently reminded Cassidy that his 2021 vote carries a cost, one the party's grassroots base has not forgotten.

A three-way primary in deep-red Louisiana

Cassidy faces two credible Republican challengers. Rep. Julia Letlow, who won a 2021 special election to the House, carries President Trump's "complete and total endorsement." Louisiana Treasurer John Fleming, a former congressman and one of the nine co-founders of the House Freedom Caucus, rounds out the top tier. Fleming is 74.

The 2026 race marks the first Louisiana Senate election since the state switched back to traditional partisan primaries after using the all-party "jungle primary" system from 2010 through 2024. If no candidate wins a majority on May 16, the top two advance to a June 27 runoff.

Trump carried Louisiana by 24 points in the 2024 presidential election. His endorsement of Letlow puts Cassidy in a difficult position in a state where loyalty to the president is a baseline expectation, not a bonus. The bitter Republican-on-Republican clashes seen in other states have arrived in full force in the Pelican State.

Polls tell conflicting stories

March polling paints an unsettled picture. An American Pulse Research & Polling survey put Letlow at 31 percent, Fleming at 25, and Cassidy at 21, a result that would knock the incumbent out before the runoff. A BDPC poll showed a similar order: Letlow 29, Fleming 23, Cassidy 19.

But a Fabrizio, Lee & Associates survey of likely Republican primary voters found a tighter race: Letlow 27, Cassidy 26, Fleming 19, with 28 percent undecided. Letlow's campaign told the Shreveport Times it did not commission that survey, though it uses the firm for its own polling.

A Public Opinion Strategies poll sponsored by Cassidy's campaign told a friendlier story for the incumbent: Cassidy 35, Letlow 24, Fleming 21. In a hypothetical Cassidy-Letlow runoff from that same survey, the gap narrowed to just two points, Cassidy 45, Letlow 43.

The American Pulse hypothetical runoff between Letlow and Fleming, without Cassidy, showed Letlow ahead 37 to 34. The Fabrizio, Lee runoff scenario between Letlow and Cassidy had Letlow leading 46 to 34, with 20 percent undecided.

In short, the only poll giving Cassidy a clear primary lead is the one his own campaign paid for. Every independent survey shows him fighting just to survive into a runoff.

The NRSC's awkward balancing act

NRSC Chairman Tim Scott, the South Carolina senator who leads the party's Senate campaign arm, said the committee would engage across the board. Politico reported his comments:

"We're going to play in all of the races, all of our primaries."

Scott told Axios in March 2025 that the NRSC would support incumbent GOP senators during the 2026 midterm cycle even if they drew a pro-Trump primary opponent. He also acknowledged that incumbents face an uphill battle when Trump endorses against them.

That acknowledgment now looks prescient. The committee has followed through on its stated policy, endorsing Cassidy, running ads, facilitating Thune's fundraiser. But DeCasper's reported response suggests the institutional support comes with private frustration. When the incumbent called to demand more, the answer was blunt: you brought this on yourself.

The dynamic is not new. In 2022, Sen. Lisa Murkowski of Alaska, another Republican who voted to convict Trump, won reelection despite Trump endorsing her opponent. Murkowski and Sen. Susan Collins of Maine are the only other remaining GOP senators who cast that 2021 vote. Collins, the sole Republican senator representing a state Kamala Harris won in 2024, is seeking reelection this November as the presumptive GOP nominee.

Cassidy's situation differs from both. Louisiana is not Alaska or Maine. It is one of the most conservative states in the country, and Trump's political gravity there is far stronger. The senator who unseated Democrat Mary Landrieu in 2014 now finds his own right flank exposed, not by Democrats, but by the lasting consequences of his impeachment vote.

Cassidy's camp says the race is closer than it looks

Cassidy aide Mark Harris told Politico the campaign views the contest as competitive, pushing back on the narrative that Letlow's Trump endorsement sealed the deal. Harris framed it as a fight:

"We're in the middle of a dogfight. Everyone's expectation is that she would shoot to a large lead and that we'd all be running from behind. But frankly I think they just weren't ready for this race."

Republican state Rep. Mike Bayham, who has remained neutral in the primary, offered a similar assessment to Politico. He noted that Trump's endorsement had not produced a decisive shift in the race.

"The Trump endorsement has not had a close-out move. Cassidy was ready for her. They defined her before she introduced herself."

That last line points to the Cassidy campaign's strategy: attack early. The Daily Caller previously reported that Letlow, during her time at the University of Louisiana at Monroe, played a role in pushing DEI workshops and "anti-racism" efforts, a record that clashes with her current public stance opposing "woke ideology." Cassidy's team has spent millions trying to make that contrast stick.

Whether that strategy can overcome a Trump endorsement in a state he won by 24 points remains the central question. The president has shown repeatedly that he does not forget political disloyalty, and Louisiana's Republican primary voters appear inclined to agree.

What the NRSC fight reveals

The reported phone call between Cassidy and the NRSC matters less for what was said than for what it confirms. The senator's own party apparatus, while formally backing him, is not willing to go to extraordinary lengths for an incumbent whose 2021 vote put him crosswise with the base. DeCasper's reported response, however blunt, reflects a political reality the NRSC cannot publicly acknowledge: some incumbents are harder to defend than others, and the reason is their own record.

Cassidy has the money. He has the endorsements of Thune and Scott. He has $26 million in combined resources. What he does not have is the one thing that matters most in a deep-red Republican primary: the confidence of the voters who sent Trump to the White House by a 24-point margin.

Fleming, as a Freedom Caucus co-founder, offers a different lane for grassroots conservatives who may view Letlow's record with some skepticism but cannot bring themselves to back Cassidy. The three-way split could be Cassidy's only path to surviving the primary, if his opponents divide the anti-incumbent vote enough to push him into a runoff. Even then, the Fabrizio survey's hypothetical runoff numbers, Letlow 46, Cassidy 34, suggest the math gets worse, not better, in a two-person race.

The broader Republican push for accountability extends beyond courtrooms and statehouses. In Louisiana, it is playing out at the ballot box. A senator who broke with his party's leader on the most consequential vote of the Trump era now wants the party's campaign arm to spend heavily on his behalf. The party's campaign arm, at least privately, appears to think that is a tough ask.

Voters will have the final word on May 16. And in Louisiana, the voters remember.