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Member brief · 119th Congress

Sen. Bill Cassidy

R · Republican · U.S. Senator, Louisiana1

In Congress
Since 2009 · 17 years
 Next election
Nov 3, 2026
 Committee leadership
Chairman, Health, Education, Labor, and Pensions

CommitteesEnergy and Natural Resources; Finance; Chairman, Health, Education, Labor, and Pensions; Veterans' Affairs2

Participation3

95 / 100

Chamber median 98
865 of 915 roll calls

Party unity3

98 / 100

Chamber median 99
on 797 party-line votes

Cross-party agreement3

10 / 100

Chamber median 9
on 845 contested votes

Ideology score4

+0.46

Chamber median +0.32
−1 left · +1 right

Notable votes and votes by issue

In the full brief: five notable recent votes chosen by a fixed rule (most recent breaks with party first), each with the member’s vote, the party’s position and a source, plus how often Cassidy votes with the party on each issue.

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Money and lobbying

In the full brief: how many of Cassidy’s PACs belong to organizations that lobbied on bills Cassidy voted on or cosponsored, with the dollars beside the chamber median; the top bills; campaign totals and the top PACs.

Full briefs are part of Oathstar Pro.

Votes most like5

R Joni Ernst IA 98% of 824
R Jon Husted OH 98% of 839
R Pete Ricketts NE 98% of 839

Share of roll calls both voted on where they voted the same way.

Next race

Nov 3, 2026 · Not on the November ballot7

On the November ballot

Julia LetlowRepublican
Jamie DavisDemocratic

Data as of Nov 5, 2026 · votes through Sep 30, 2026 · Method: https://oathstar.com/methodology · Live profile: https://oathstar.com/people/bill-cassidy

  1. 1. Member record and terms: congress.gov; unitedstates/congress-legislators, retrieved 2026-11-05. www.congress.gov/people/C001075
  2. 2. Committees: unitedstates/congress-legislators, retrieved 2026-11-05. github.com/unitedstates/congress-legislators
  3. 3. Participation, party unity, cross-party agreement, votes by issue: Oathstar from Voteview roll calls, 119th Congress, retrieved 2026-11-05. voteview.com/person/20919
  4. 4. Ideology: DW-NOMINATE first dimension, Voteview, 119th Congress. voteview.com/person/20919
  1. 5. Votes most like: Oathstar from Voteview roll calls, 119th Congress. voteview.com/data
  2. 6. Candidates: FEC filings, 2026 LA-SENATE race, retrieved 2026-11-05. www.fec.gov/data/elections/senate/LA/2026/
  3. 7. November ballot: https://en.wikipedia.org/wiki/2026_United_States_Senate_elections, as of 2026-10-05. en.wikipedia.org/wiki/2026_United_States_Senate_elections

Prepared with Oathstar · oathstar.com

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