Senator Bill Cassidy Faces Trump-Backed Challenger in Louisiana Primary

Louisiana voters head to the polls Saturday to decide whether Republican Sen. Bill Cassidy will secure a third term or be unseated by a Trump-backed challenger. Cassidy, a two-term senator who voted to convict former President Donald Trump in his 2021 impeachment trial, faces a primary challenge from Rep. Julia Letlow and state Treasurer John Fleming, both positioning themselves as more aligned with Trump. If no candidate wins a majority, the top two will advance to a runoff on June 27.

Cassidy has acknowledged that his impeachment vote “might” be a liability but emphasized his legislative record and ability to work with Trump. Senate Majority Leader John Thune praised Cassidy as “a terrific senator for Louisiana” and noted the party’s support for incumbents, though he acknowledged that Louisiana voters will ultimately decide.

Trump endorsed Letlow on the eve of the primary, calling her a “TOTAL WINNER” and praising her as a “wonderful person” who has consistently delivered for Louisiana. Letlow, 45, was elected to Congress in 2021 following the death of her husband and has criticized Cassidy for disloyalty to the GOP, saying Louisiana “shouldn’t have to wonder how our senator will vote when the pressure’s on.”

The race is complicated by recent changes to Louisiana’s primary system. Gov. Jeff Landry, who supports Letlow, shifted state primaries from an all-party “jungle” format to closed party primaries, a move Cassidy says has confused voters and made it harder for unaffiliated voters to support him. Cassidy’s campaign manager accused Landry of meddling to benefit Letlow.

Cassidy, a physician and chair of the Senate Health, Education, Labor and Pensions Committee, has also clashed with Health and Human Services Secretary Robert F. Kennedy Jr., despite casting the key vote to confirm him. Cassidy opposed Kennedy’s vaccine skepticism and has been targeted by Kennedy’s “Make American Healthy Again” movement, which has spent heavily to support Letlow.

Campaign spending has exceeded $30 million, with Cassidy receiving $21.8 million in supportive ads, Letlow $9.8 million, and Fleming $1.5 million. Letlow has leaned into the MAHA message, while Cassidy has criticized her past support for diversity, equity, and inclusion programs and questioned her stock trades.

Fleming, who declined a Trump administration job reportedly offered to drop out, has positioned himself as the only “true conservative” and focused on opposing state carbon capture policies. Despite Trump’s endorsement of Letlow, Fleming remains in the race.

Other prominent Republicans, including House Speaker Mike Johnson, have refrained from endorsing, citing close relationships with all candidates. Johnson described Letlow as “like a sister” but also noted his ties to Fleming and Cassidy.

On the Democratic side, Nick Albares, Gary Crockett, and Jamie Davis compete for their party’s nomination, but Louisiana’s strong Republican lean makes the GOP primary winner the likely favorite in the general election. Trump won 60% of the Louisiana vote in 2024, and the state has not elected a Democratic senator since 2008.

The primary comes amid broader questions about Trump’s influence in Republican politics. His recent success in Indiana’s state Senate redistricting battles contrasts with the uncertainty of his impact in Louisiana. Meanwhile, the National Republican Senatorial Committee continues to back Cassidy, underscoring the party establishment’s support for the incumbent despite Trump’s opposition.