Louisiana Sen. Bill Cassidy faces a precarious path to reelection as he competes against two Republican primary challengers who have weaponized his 2021 vote to convict former President Donald Trump. The incumbent senator is polling third heading into Saturday's Louisiana Senate Republican primary, according to multiple surveys, with the outcome likely to determine whether Cassidy advances to a potential run-off or becomes the latest casualty of Trump's ongoing revenge campaign against Republicans who crossed him.
Cassidy voted to convict Trump following the January 6, 2021 Capitol riot, making him one of seven Senate Republicans to do so. The vote has defined his political vulnerability ever since, with Trump publicly calling Cassidy "very disloyal" and urging Louisiana Republicans to defeat him. The former president endorsed Rep. Julia Letlow in January and continues to criticize Cassidy on Truth Social, most recently reupping his support for Letlow by calling her a "TOTAL WINNER."
What the Right Is Saying
Trump-aligned Republicans argue that Cassidy's impeachment vote represented an unforgivable betrayal of the party's leader and base voters. Kevin Berken, Jefferson Davis Parish GOP chair who opposes Cassidy, said: "When it comes to stabbing Trump in the back with that vote to impeach, the memories are very long." The state Republican Party formally ostracized Cassidy following his impeachment vote.
State Treasurer John Fleming has positioned himself as the most conservative candidate, pointing to his tenure in the House Freedom Caucus and service as deputy chief of staff during Trump's first administration. "Neither one of them can claim a stronger conservative record," Fleming has argued of his rivals. The Make America Healthy Again movement, led by Secretary of Health and Human Services Robert F. Kennedy Jr.'s allies, has pledged $1 million to oust Cassidy over his questioning of Kennedy's vaccine stance during confirmation and his role in blocking Casey Means' surgeon general nomination.
Letlow campaign spokesperson Katherine Thordahl stated: "Unfortunately for Bill Cassidy, Louisianans have never forgotten Bill Cassidy's vote to convict President Trump, which remains the defining contrast in this race."
What the Left Is Saying
From the progressive perspective, Cassidy's potential defeat illustrates the grip Trump maintains over the Republican Party and the consequences of principled but politically costly votes. Democrats have largely avoided actively intervening in the race, preferring to face either challenger in the general election given Louisiana's red tint. Some Democratic strategists view Cassidy as one of the more institutionalist Republicans remaining in the Senate, someone who occasionally worked across the aisle on health policy and budget matters.
Former colleagues and neutral political observers note that Cassidy's two terms brought significant federal funding to Louisiana, including hurricane recovery provisions and healthcare initiatives. The loss of such a legislator would diminish the state's seniority in a chamber where relationships and longevity matter for constituent services and project delivery.
What the Numbers Show
The polling picture favors Cassidy's opponents heading into Saturday. An Emerson College Survey from late April showed Fleming at 28 percent support, Letlow at 27 percent, and Cassidy trailing both at 21 percent. The margin of error for that poll was approximately 3.5 percentage points.
Trump has not deployed his substantial MAGA Inc. political operation on Letlow's behalf despite her endorsement. His $300 million-plus war chest remains unspent in Louisiana, and he has not made a campaign appearance for any candidate in the race beyond social media posts. The MAHA PAC's $1 million commitment represents significant outside spending but its actual electoral impact remains uncertain.
Louisiana's closed primary system requires candidates to secure a majority to win outright; if no candidate reaches 50 percent plus one vote, the top two finishers advance to a run-off scheduled for May 30. Cassidy's campaign argues his path involves consolidating support among non-party voters and independents who can participate in the general election run-off but not Saturday's primary.
The Bottom Line
Saturday's primary represents a significant test of Trump's continued electoral influence over Republican voters three years into his second term. A Cassidy defeat would mark the most prominent incumbent ouster in Trump's revenge campaign against impeachment voters, which has already claimed targets in Indiana earlier this month with Kentucky Rep. Thomas Massie facing his own primary May 19.
Cassidy Campaign Manager Mark Harris said their data indicates the incumbent is "in a very strong chance to put together a winning coalition" for a run-off position even if he doesn't finish first, pointing to the anti-Cassidy vote being split between two candidates. Whether that analysis proves accurate will determine whether Louisiana retains its senior senator or sends one of Trump's chosen alternatives to Washington.