Anti-Trump Senator Bill Cassidy May Not Finish in the Top Two in His GOP Primary

There is a particular kind of political tragedy that is entirely self-authored — the kind where a man makes a series of deliberate, defiant choices, watches the consequences approach in plain sight for years, and then expresses outrage that the bill has finally arrived. Senator Bill Cassidy of Louisiana is living that tragedy right now, five weeks before a Republican primary that may well end his Senate career — and he has no one to blame but the face he sees in the mirror each morning.

According to reporting from TLD, Cassidy is currently “furious” at the National Republican Senatorial Committee and Senate Majority Leader John Thune, believing they haven’t sufficiently bankrolled his reelection bid. This is the same NRSC that helped raise more than $650,000 for him at a January event, and that cut video ads on his behalf. None of that was enough to mollify the senator. The response he received from NRSC Executive Director Jennifer DeCasper — blunt, profanity-laced, and entirely to the point — was perhaps the most honest political communication he’s gotten in years: he shouldn’t have voted to convict Donald Trump.

That vote, cast in February 2021, is the original sin from which everything else in this story flows.

The Vote Heard ‘Round Louisiana

When Cassidy joined six other Republican senators in voting to convict the then-former president, he did not do so quietly or apologetically. He was emphatic. “Our Constitution and our country is more important than any one person. I voted to convict President Trump because he is guilty,” he declared.

The Louisiana Republican Party responded within hours — not with disappointment, but with something closer to institutional fury. The state party’s executive committee unanimously voted to censure him. The Republican Party of East Baton Rouge Parish, in an action it had never taken before, declared Cassidy “an object of shame,” stating that his vote was “a betrayal of the people of Louisiana.”

Mike Bayham, the secretary of the LAGOP, put it simply: “Bill Cassidy is a senator without a party as of today.”

That phrase — a senator without a party — has proven to be one of the more prophetic political descriptions of the past several years. And now, five years later, the same Mike Bayham, still watching the Louisiana Senate race as a neutral observer, has told Politico that Cassidy is exactly what he predicted: a politician without a natural base.

The Architecture of Political Isolation

Here is what makes Cassidy’s position genuinely remarkable: he didn’t just cast a vote. He embraced a posture. In 2023, after Trump was indicted on classified documents charges, Cassidy called for Trump to drop out of the 2024 presidential race. After Trump secured the Republican nomination, Cassidy declined to endorse him. He had earlier signaled openness to the No Labels third-party effort — a movement whose sole animating purpose was to drain votes from the Republican nominee. He told multiple interviewers that Trump could not win a general election. He was not, in other words, a senator who made one difficult vote under pressure and moved on. He was a senator who spent several years actively working to ensure his own party’s presidential candidate would lose.

And now that candidate has won — twice — and is the most popular figure in the Louisiana Republican Party by a wide margin. Trump carried Louisiana by 24 points in the 2024 presidential election. The state has not sent a Democrat to the U.S. Senate since Mary Landrieu lost to Cassidy himself in 2014. These are not the political conditions under which one survives a closed Republican primary after voting to remove a president the base regards as something close to a political martyr.

The jungle primary system that once protected Cassidy — allowing independents and crossover Democrats to prop up a senator the Republican base had already abandoned — is gone. Following the enactment of House Bill 17 in 2024, this will be the first U.S. Senate election in Louisiana to utilize party primaries instead of a single blanket primary since 2010. The electorate that will determine Cassidy’s fate on May 16 is the one constituency that has never forgiven him.

A Three-Way Race, One Certain Loser

Into this environment come two credible challengers. Rep. Julia Letlow carries the most powerful political asset in Louisiana Republican politics: President Donald Trump and Governor Jeff Landry both endorsed Letlow. Trump called her a “Total Winner” and urged her to run in a January post on Truth Social. State Treasurer John Fleming is himself no stranger to the conservative movement — a founding member of the House Freedom Caucus, Fleming has built his campaign on the argument that he stood with Trump when others walked away.

The polling — such as it is, in a race where every campaign has commissioned its own numbers — tells a consistent story about Cassidy’s ceiling, if not about who leads among his opponents. A JMC Analytics poll commissioned by the Fleming campaign found Fleming at 26 percent, Letlow at 25, and Cassidy at 22. A BDPC Strategic Campaign Services poll found Letlow leading at 29 percent, Fleming at 23, and Cassidy at 19. A survey by American Pulse Research placed Letlow at 31 percent, Fleming at 25, and Cassidy third at 21. Even Cassidy’s own campaign-commissioned poll, from Public Opinion Strategies, showed him at only 35 percent — the kind of number that, for an incumbent, signals deep structural weakness.

No poll is showing Cassidy above 35 percent, which is a strong indication that most Republican voters in Louisiana have decided they do not want to return him to the Senate. In a three-way race where no one is expected to clear 50 percent on May 16, Cassidy faces the genuine prospect of finishing third — of being mathematically eliminated before a runoff even begins, denied the chance to make his case to a broader electorate.

Republican insiders now assess that even if Cassidy survives to a runoff, he likely loses it. The Letlow campaign’s pollster, Fabrizio Lee & Associates, found that once voters are told of Trump’s endorsement, Letlow’s support expands dramatically — from 27 percent to 48 percent in one survey, with Cassidy collapsing to 19.

The Spending That Cannot Buy Forgiveness

Cassidy has not been passive. He has spent with the kind of ferocity that suggests a man who understands, on some level, that money is the only card he has left. Cassidy and his allied groups began the year with approximately $26 million in the bank, and his campaign and the Louisiana Freedom Fund have poured more than $14 million into the race on advertising, most of it attacking Julia Letlow.

The attack strategy has focused on Letlow’s past involvement with diversity, equity, and inclusion initiatives during her time in university administration — a line of attack that requires voters to believe Cassidy is the more authentic conservative in this race. That is a difficult argument to make to a Louisiana Republican primary voter who remembers not just the impeachment vote, but the years of rhetorical distance Cassidy deliberately placed between himself and the man that voter twice sent to the White House.

Money, it turns out, cannot purchase a reputation. It can amplify a message, but when the message is trust me, I’m really a conservative, fourteen million dollars of amplification doesn’t make it ring true. Cassidy’s attacks on Letlow have had some effect — “They defined her before she introduced herself,” one neutral Republican legislator told Politico — but they haven’t moved Cassidy’s own numbers in any meaningful direction. He remains where he has been: trapped in the low-to-mid twenties, spending profligately against opponents who remind voters, simply by existing, of the choice Cassidy made in February 2021.

A Lesson in the Cost of Calculated Apostasy

Conservatives should resist the temptation to view this race merely as a MAGA loyalty test. The deeper issue is one of democratic accountability — the idea that elected representatives are answerable to the people who sent them to Washington. Louisiana Republicans sent Cassidy to the Senate not once but twice. They did so alongside Donald Trump, whose agenda Cassidy voted to advance in 89 percent of cases during his first term. And then, in a single consequential vote — amplified by years of subsequent commentary designed to further distance himself from his own constituency — Cassidy told those voters that his judgment superseded theirs.

There is something worth considering in the book of Galatians: “Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap” (Galatians 6:7, KJV). The principle is not theological alone — it is one of the oldest and most reliable laws of political life. Choices have costs. Betrayals, however principled the betrayer considers them, are remembered. The voters of Louisiana have long memories and, now, a closed primary.

Bill Cassidy made his choice in 2021 with full knowledge of what it would cost him. He said the Constitution mattered more than any one person. That is a defensible position. But it is not a position that entitles a man to the support of the party he chose to wound, to the committee infrastructure he chose to antagonize, or to the voters he chose to lecture. He is, as his own party officials declared five years ago, a senator without a country. On May 16, Louisiana Republicans will have the opportunity to make that description permanent.