Bill Cassidy
U.S. Senator from Louisiana since 2015. Did not run for re-election in 2026; leaves office in January 2027.
U.S. Senator from LouisianaBorn 1957
- In office
- 11 yrs
- Since 2015
- Bills became law
- 1
- 121 sponsored, 119th Congress
- Votes missed
- 5.5%
- Chamber median 2.1%
- With party
- 98%
- On votes splitting the parties
- Last margin
- +4.3
- Won 2014
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET
Committees
119th Congress.
- Senate Committee on Energy and Natural ResourcesEnergyNational ParksWater and Power
- Senate Committee on FinanceFiscal Responsibility and Economic GrowthHealth CareTaxation and IRS Oversight
- Senate Committee on Health, Education, Labor, and Pensions · ChairmanEducation and the American Family · Ex OfficioEmployment and Workplace Safety · Ex OfficioPrimary Health and Retirement Security · Ex Officio
- Senate Committee on Veterans' Affairs
Source: congress-legislators committeesUpdated Nov 7, 2026, 3:00 PM ET
Legislation
Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET
Voting record
Where Cassidy sits in the U.S. Senate
Cassidy is closer to the center than 84% of the chamber's Republicans.
Closest: John Thune, Darline Graham, Jerry Moran
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:06 PM ET
With Cassidy’s party
- Votes with the chamber's Republicans98%
- Cosponsorships of the other party's bills29%
Black tick: the average of Republicans in the U.S. Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Cassidy’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Cassidy | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Jun 5, 2026 | S 2: Secure America Act | Yes | Yes | No | Passed 52–47 |
| Apr 16, 2026 | HJRES 140: Providing for congressional disapproval under chapter 8 of title 5, United States Code,… | Yes | Yes | No | Passed 50–49 |
| Feb 12, 2026 | HJRES 142: Disapproving the action of the District of Columbia Council in approving the D.C.… | Yes | Yes | No | Passed 49–47 |
| Jan 30, 2026 | HR 7148: Consolidated Appropriations Act, 2026 | Yes | Yes | No | Passed 71–29 |
| Dec 4, 2025 | HJRES 131: Providing for congressional disapproval under chapter 8 of title 5, United States Code,… | Yes | Yes | No | Passed 49–45 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Cassidy was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Elections
Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.
| Year | Race | Result | Margin |
|---|---|---|---|
| 2014 | U.S. Senate, Louisiana (runoff) | Won | +11.9 |
| 2014 | U.S. Senate, Louisiana | Won | R+4.3 |
| 2012 | U.S. House, LA-6 | Won | R+68.9 |
| 2010 | U.S. House, LA-6 | Won | R+31.3 |
| 2008 | U.S. House, LA-6 | Won | R+7.8 |
| 2007 | Louisiana State Senate, District 16 | Won | R+60.3 |
Source: 99chambers results archive
Seats Cassidy has held
- U.S. Senate, Louisiana · 2015–2027
- U.S. House, LA-6 · 2009–2015
- Louisiana State Senate, District 16 · 2007–2011
Source: 99chambers results archive
Who Cassidy has run against
- Mary L. Landrieu (D) · 2014 general, won
- Rufus Holt Craig Jr. (L) · 2012 general, won
- Merritt E. McDonald Sr. (D) · 2010 general, won
- Donald J. Cazayoux (D) · 2008 general, won
- Troy Moreau (R) · 2007 general, won
Source: 99chambers results archive
How we know Cassidy
One person, matched across every source we use.
- Bioguide C001075
- FEC H8LA00017
- Wikidata Q861999
- Ballotpedia Bill Cassidy
- Vote Smart 69494
- GovTrack 412269
- OpenSecrets N00030245
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Nov 7, 2026, 3:00 PM ET