Trump-Backed Pair Advances After Cassidy Primary Defeat

Cover image from npr.org, which was analyzed for this article
Incumbent Sen. Bill Cassidy lost his Republican primary after being targeted for voting to convict Trump in 2021. Trump-backed candidates advance to a June runoff, highlighting the former president's continued dominance over the GOP.
PoliticalOS
Sunday, May 17, 2026 — Politics
Cassidy’s defeat shows that a 2021 impeachment vote remains a durable liability for Republican incumbents facing primary voters aligned with Trump. The June runoff between Letlow and Fleming will test whether that alignment produces a unified nominee or exposes further divisions inside the state party.
What outlets missed
Most accounts omitted precise parish-level vote breakdowns that would show whether Cassidy’s support collapsed uniformly or held in specific urban and suburban areas. Few noted that Cassidy had placed holds on certain Trump health nominees in the weeks before the primary, adding recent friction beyond the 2021 impeachment vote. Coverage also underplayed the fact that Louisiana’s Senate primary remained open while House contests were postponed, leaving open the possibility that crossover voting patterns differed from prior cycles.
Trump's Latest Retribution Hit Claims Louisiana Senator Who Voted to Convict Him
Louisiana voters delivered a decisive blow to Senator Bill Cassidy on Saturday, handing the two-term Republican a third-place finish in his party's primary and ending his bid for reelection. The outcome came after President Donald Trump spent months attacking Cassidy for his 2021 vote to convict Trump during the impeachment trial tied to the January 6 Capitol attack.
With more than 90 percent of votes counted, Representative Julia Letlow, Trump's endorsed candidate, led with roughly 45 percent. State Treasurer John Fleming took second with about 28 percent. Cassidy finished third with around 25 percent, failing to reach the runoff scheduled for June 27. Letlow and Fleming will now face off in that contest.
Trump made his feelings clear on Truth Social hours before polls closed. He labeled Cassidy a "disloyal disaster," a "sleazebag" and a "terrible guy" who was "BAD FOR LOUISIANA." The president reminded voters that Cassidy had campaigned as a Trump supporter before voting to remove him from office over what Trump called "total bulls***." Trump urged voters to back Letlow and Fleming instead, predicting Cassidy would be "CLOBBERED."
Cassidy was one of seven Senate Republicans who voted to convict Trump in February 2021. He later wrote that Trump was guilty of inciting the riot and subverting the peaceful transfer of power. In the years since, Trump repeatedly singled him out as an example of disloyalty. Cassidy had tried to highlight his working relationship with the White House in recent months, but the effort proved insufficient against the president's sustained pressure.
In his concession speech, Cassidy did not mention Trump by name yet delivered pointed remarks about loyalty and democratic norms. He told supporters that when democracy does not go your way, "you don't pout, you don't whine, you don't claim the election was stolen." He stressed that the country is about the welfare of all Americans and fidelity to the Constitution, not service to one individual. The comments drew immediate attention as an implicit rebuke of Trump's long-running refusal to accept the 2020 results.
The primary result fits a pattern in which Trump has moved aggressively against Republicans who broke with him over January 6 or other matters. Several of the seven senators who voted to convict chose not to seek reelection. Cassidy, a physician who had represented Louisiana in Congress since 2015, campaigned aggressively and outspent his rivals yet could not overcome the president's influence within the state party.
Letlow, who will now compete in the runoff, has positioned herself as aligned with Trump's agenda. She has criticized Cassidy for working with Democrats on diversity initiatives and has emphasized representing constituents over personal loyalty to any leader. Fleming, a former Trump administration official, also advanced and will test whether he can consolidate conservative support against Letlow next month.
Trump celebrated the defeat on social media, calling Cassidy's loss unprecedented and declaring his political career over. The president has already turned his attention to other critics, including Representative Thomas Massie of Kentucky, whom he labeled the "Worst Republican Congressman in History" and urged voters to defeat in an upcoming primary.
For many in the Republican base, Cassidy's ouster serves as confirmation that support for Trump's second impeachment remains a lasting liability. For others, it underscores how the party's direction has narrowed around one man's demands for personal loyalty. Cassidy's exit leaves fewer remaining officeholders who directly challenged Trump after the Capitol riot.
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