Louisiana Senate Race Tests Trump’s Grip on Republican Voters
Republican Sen. Bill Cassidy’s reelection fight in Louisiana is becoming one of the most closely watched Republican primaries of the 2026 midterms as President Donald Trump ramps up efforts to defeat GOP incumbents viewed as disloyal.
Cassidy, who voted to convict Trump after the Jan. 6 Capitol attack, is facing strong pressure from Trump-backed Rep. Julia Letlow and former Rep. John Fleming in Louisiana’s newly restructured partisan primary system.
The race is increasingly being viewed as a national test of Trump’s continued control over Republican primary voters and the future direction of the GOP Senate conference.
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Political analysts say Louisiana’s shift away from its longtime “jungle primary” system may benefit more ideologically conservative candidates while weakening crossover support that could help incumbents like Cassidy.
The contest is also part of a broader national trend as several Republican incumbents prepare for Trump-aligned challenges ahead of the 2026 Senate elections.
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