Trump's Endorsed Candidate Letlow Competes Against Fleming in Louisiana Senate Runoff

Louisiana Republicans headed to the polls on June 27 to pick their next U.S. Senate candidate, with Trump-backed U.S. Rep. Julia Letlow facing former congressman and state Treasurer John Fleming in a tight runoff. The race is the latest chapter in President Trump's push to replace Republicans who crossed him — most notably incumbent Sen. Bill Cassidy, who was eliminated after finishing third in the May 16 primary with just 24.8% of the vote. WWL-TV reported polls closed at 7:00 PM CDT.
Letlow led the May primary with 44.8%, while Fleming earned 28.3%. A final Quantus Insights poll of 770 likely voters, taken June 23–24, showed Letlow ahead 51.5% to 48.5% — a margin within the 3.5% error range, making the outcome far from certain, according to Ballotpedia.
Sen. Bill Cassidy was one of seven Republican senators who voted to convict Trump after the January 6 Capitol riot. Trump never forgot it. He endorsed Letlow as early as January 18, 2026, calling her a "total winner" and "the only Trump-endorsed candidate," according to PBS News. Trump's team reportedly identified Cassidy as the only sitting GOP senator they were actively targeting for defeat this cycle.
The strategy worked. Cassidy's third-place finish marked the first time a Louisiana incumbent senator failed to make a runoff since 1944, according to Wikipedia. It was a stunning fall for a senator who had raised over $7 million — far more than either challenger — heading into primary day.
Both Letlow and Fleming claim the "America First" label, but they represent very different things. Letlow, elected to Congress in 2021 to fill the seat of her late husband Luke Letlow, has campaigned as Trump's chosen loyalist. Fleming, a founder of the House Freedom Caucus, held three roles in Trump's first administration — at HHS, Commerce, and as White House Deputy Chief of Staff — and calls himself a "proven MAGA conservative," according to the Louisiana State Treasurer's Office.
Local analysts describe the divide as "alignment vs. accommodation." Letlow is seen as Trump's movement candidate — the outsider he picked. Fleming is viewed as the insider, experienced but not "chosen." That distinction may matter most to voters who see the Trump endorsement as the real stamp of approval, according to Baton Rouge Business Report.
The runoff map shows a sharp geographic divide. Letlow dominates the New Orleans and Monroe media markets, while Fleming runs strongest in rural northwest Louisiana, Alexandria, and Lake Charles, according to data from Quantus Insights. That split means turnout in each region could swing the result.
Experts warned before the vote that a June runoff — six weeks after the May primary — tends to produce low turnout. Low turnout usually helps the candidate with the most fired-up base. That dynamic typically favors Trump-endorsed candidates, according to NewsNation.
Republicans hold a 53-45 Senate majority, and this Louisiana seat is considered safely Republican in November. The winner will face either Jamie Davis, a Black farmer who led the Democratic primary with 47% of the vote, or businessman Gary Crockett in the general election on November 3, 2026, according to NPR.
But the bigger prize is symbolic. A Letlow victory would send a clear message to every Republican in Congress: opposing Trump carries a price. CNN has framed the broader trend as a cautionary tale of the shrinking GOP "Big Tent," with more Republicans losing primaries after breaking with the president. A Letlow win would be Trump's sharpest proof yet that the warning is real.
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