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Bill Cassidy Loses Republican Primary After Confirming RFK Jr. as Health Secretary

Louisiana Sen. Bill Cassidy, who voted to confirm Robert F. Kennedy Jr. as health secretary despite his own pro-vaccine record, is trailing in polls ahead of this weekend's Republican primary. Cassidy's vote, intended to build bridges with the Trump administration, has drawn attacks from Kennedy allies and Trump.

Stat
The Atlantic
2 sources·May 13, 1:18 PM(1 hr ago)·2m read
Bill Cassidy Loses Republican Primary After Confirming RFK Jr. as Health Secretarykoreaherald.com
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Louisiana Sen. Bill Cassidy is in danger of losing his seat in this weekend's Republican primary, with recent polls showing him in third place as voters punish him for confirming Robert F. Kennedy Jr.

as health secretary last year and for his 2021 vote to convict then-President Trump of inciting the January 6 Capitol attack. Cassidy, a physician who built a reputation as the Republican caucus's leading health policy expert, initially balked at supporting Kennedy but ultimately voted yes after extracting what he described as assurances that Kennedy would not undermine vaccine policy.

Cassidy later criticized Kennedy's decision to appoint vaccine skeptics to the CDC's advisory committee on immunization practices and joined other Republican senators in blocking the confirmation of Kennedy ally Casey Means as surgeon general.

In a brief encounter last month in the Senate subway, Cassidy declined to express regret. "I'm a doctor. You make a decision, you move on," he said. "You don't sit around and say, 'Oh my gosh, that was a great decision.

Cassidy's primary challengers have seized on his record to paint him as insufficiently loyal to Trump and the Make America Healthy Again movement. Rep.

He has steered legislation through Congress addressing surprise medical billing, fentanyl trafficking and rural health funding, securing more than $200 million for Louisiana projects in last year's tax bill. Only 10 percent of adults had received the 2025-26 COVID booster as of January.

No parish in the state currently has kindergarten vaccination rates high enough for herd immunity against measles, mumps and rubella, according to a Washington Post analysis. In late 2024 and early 2025 the state suffered its worst whooping cough outbreak in three decades, resulting in two infant deaths.

Cassidy publicly asked Kennedy in September to urge parents to vaccinate their children against whooping cough.

Kennedy did not respond publicly. Kennedy has since overseen a CDC review examining possible links between vaccines and chronic conditions including autism, contradicting what Cassidy said Kennedy promised during the confirmation process.

Key Facts

Third place
Cassidy trails in Emerson College poll before primary
10 percent
Louisiana adult COVID booster rate as of January 2026
$1 million
MAHA Action pledge to unseat Cassidy
Two infants
Died in Louisiana's worst whooping cough outbreak in 30 years
80 percent
Louisiana voters support school vaccine mandates per recent poll

Story Timeline

5 events
  1. May 2026

    Emerson College poll shows Cassidy trailing in third place days before Louisiana Republican Senate primary.

    2 sourcesThe Atlantic · STAT
  2. April 2026

    Trump announces new surgeon general nominee after Senate Republicans including Cassidy block Casey Means.

    1 sourceThe Atlantic
  3. September 2025

    Cassidy asks Kennedy to urge Louisiana parents to vaccinate children amid worst whooping cough outbreak in 30 years.

    1 sourceThe Atlantic
  4. Last year

    Cassidy votes to confirm RFK Jr. as health secretary despite initial reservations and his pro-vaccine background.

    2 sourcesThe Atlantic · STAT
  5. February 2021

    Cassidy votes to convict Trump on January 6 charges, prompting censure by Louisiana Republican Party.

    1 sourceThe Atlantic

Potential Impact

  1. 01

    Kennedy gains stronger influence over HHS and CDC policy with reduced internal Republican opposition.

  2. 02

    Trump-endorsed candidate likely wins the seat, further aligning Louisiana's Senate representation with MAGA priorities.

  3. 03

    MAHA movement demonstrates ability to punish Republican lawmakers who cross it on health policy.

  4. 04

    Louisiana's already low childhood vaccination rates could decline further amid continued state legislative efforts.

Transparency Panel

Sources cross-referenced2
Framing risk65/100 (moderate)
Confidence score74%
Synthesized bySubstrate AI
Word count331 words
PublishedMay 13, 2026, 1:18 PM
Bias signals removed5 across 2 outlets
Signal Breakdown
Speculative 2Loaded 1Editorializing 1Amplifying 1

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