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Trump-Backed Candidate Advances in Louisiana Senate Primary

Representative Julia Letlow and state Treasurer John Fleming advanced to a runoff in the Louisiana Republican primary for Senate after defeating incumbent Sen. Bill Cassidy. President Trump endorsed Letlow in the race.

The New York Times
Politico
Fox News
CBS News
ABC News
6 sources·May 17, 7:32 PM(10 days ago)·1m read
Trump-Backed Candidate Advances in Louisiana Senate PrimaryFox News
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Representative Julia Letlow and state Treasurer John Fleming advanced to a runoff in the Louisiana Republican primary for Senate after defeating incumbent Sen. Bill Cassidy on Saturday. With most results tabulated, Letlow received 45 percent of the vote, Fleming received roughly 28 percent and Cassidy received just under 25 percent.

Since no candidate reached 50 percent, Letlow and Fleming will face each other next month for the Republican nomination. The outcome marks the first time an elected Republican senator has lost renomination since Sen. Richard Lugar of Indiana in 2012.

President Trump endorsed Letlow before she entered the race in January and called her a winner who will never let voters down. Letlow told supporters that Louisiana made it clear it is ready for strong conservative leadership that will stand with the president.

Louisiana made it clear tonight: we are ready for strong conservative leadership that will stand with President Trump and never waver." — Rep. After conceding, Cassidy told supporters that when you participate in democracy sometimes it does not turn out the way you want it to, but you do not pout or claim the election was stolen. The winner of the runoff will be the favorite to keep the seat in Republican hands in the general election.

Key Facts

45 percent
vote share for Rep. Julia Letlow in primary
28 percent
vote share for state Treasurer John Fleming
25 percent
vote share for Sen. Bill Cassidy
June runoff
scheduled between Letlow and Fleming for GOP nomination

Story Timeline

4 events
  1. May 18, 6:03 PM ET

    1 new source added: ABC News

    1 sourceABC News
  2. May 16, 2026

    Representative Julia Letlow and state Treasurer John Fleming advanced to runoff after defeating Sen. Bill Cassidy in Louisiana GOP primary.

    5 sourcesThe New York Times · Politico · Fox News · CBS News
  3. May 16, 2026

    President Trump posted on social media calling Cassidy a disloyal disaster and praising Letlow.

    3 sourcesFox News · CBS News
  4. May 15, 2026

    President Trump took aim at Cassidy on social media the day before the primary.

    2 sourcesFox News · CBS News

Potential Impact

  1. 01

    The Republican nominee will be the strong favorite in the November general election in solidly red Louisiana.

  2. 02

    The primary result serves as another test of President Trump's influence in Republican nomination contests.

Transparency Panel

Sources cross-referenced6
Confidence score86%
Synthesized bySubstrate AI
Word count222 words
PublishedMay 17, 2026, 7:32 PM
Bias signals removed2 across 2 outlets
Signal Breakdown
Amplifying 2

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