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Sen. Bill Cassidy faces first primary since his Trump impeachment vote

Fleming is campaigning as a conservative alternative to Cassidy and says he declined an administration job offer to leave the race.

Sen. Bill Cassidy faces first primary since his Trump impeachment vote
Image · NBC New York

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This article1 analysis · Oct 6, 2026

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NBC New Yorkvia NBC News
May 16, 2026
tl;dr

Louisiana voters are choosing among Sen. Bill Cassidy and two challengers in a Republican primary that tests the political impact of Cassidy’s 2021 vote to convict Donald Trump. The race also features competing endorsements, disputes over the primary rules and more than $30 million in reported ad spending.

Community verdict

VOTING CLOSED
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John Fleming R · LA
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No good or bad look here

This story reports what happened without casting Fleming in a good or bad light, so readers don’t rate it and it doesn’t count toward Fleming’s record.

● INFORMATIONAL

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Louisiana Senate candidate challenging Cassidy

PRIMARY SUBJECT
Bill Cassidy
R · LA · SEN

Louisiana senator facing a Republican primary challenge

Cassidy's version of this story ↗
Julia Letlow
R · LA-5

Louisiana representative and Republican Senate primary challenger

Letlow's version of this story ↗
Mike Johnson
R · LA-4

House speaker who did not endorse a candidate

Donald Trump
R · President of the United States

President who endorsed Letlow and is central to the discussion of Cassidy’s impeachment vote

John Thune
R · SD · SEN

Senate majority leader who expressed support for Cassidy

Robert F. Kennedy Jr.
R · Secretary of Health and Human Services

Health and Human Services secretary whose vaccine views have clashed with Cassidy

ALSO MENTIONED  Casey Means, Trump’s former nominee for surgeon general; Jeff Landry, Louisiana governor backing Letlow who changed the primary system and delayed House primaries

Part of a bigger story

22 OUTLETS
Letlow and Fleming Advance to Louisiana Senate Runoff

Outlets agree that Bill Cassidy lost Louisiana’s Republican Senate primary and Julia Letlow and John Fleming advanced to a runoff. Fleming’s role is to face Letlow in the contest for the Republican nomination. Left-leaning outlets connect the result to Trump’s endorsement and Cassidy’s past impeachment vote, while also noting Cassidy’s criticism of election denial. Center outlets mostly report the result and place it in the context of Trump’s influence, with some also discussing election-process issues or the runoff outlook. Right-leaning outlets more strongly cast Cassidy’s defeat as tied to Trump’s influence and Cassidy’s vote to convict him.

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