Bill Cassidy
Republican · LA · U.S. Senate
Bill Cassidy is not among the listed candidates for this seat — the seat is still up in 2026. Jamie Davis vs. Julia Letlow.
R +31 points of win probability since September.
Bio
William Morgan Cassidy is an American politician and physician who is the senior United States senator from Louisiana, a seat he has held since 2015. A member of the Republican Party, he served in the Louisiana State Senate from 2006 to 2009 and in the U.S. House of Representatives from 2009 to 2015. Cassidy has chaired the Senate Health, Education, Labor, and Pensions (HELP) Committee since 2025.
Full bio on Wikipedia →Record of service
- In office
- 17.7 years
- Chambers
- House 6y, Senate 11.7y
- First took office
- 2009 (5 terms)
- Seniority
- 36 of 100 by time served
- Age
- 69
- Senate class
- 2 · senior senator
- Lafayette, LA · 337-261-1400
- Metairie, LA · 504-838-0130
- Monroe, LA · 318-324-2111
- Lake Charles, LA · 337-602-7253
- Baton Rouge, LA · 225-929-7711
- Shreveport, LA · 318-798-3215
- Alexandria, LA · 318-448-7176
Service history, offices and identifiers from unitedstates/congress-legislators (public domain). Years served sum each term rather than subtracting the first start date, so a break in service is not counted as time in office.
Reported net worth
- Assets
- $104k – $310k
- Liabilities
- $1.0M – $2.0M
- Net worth
- −$1.9M – −$690k
- Since 2014
- −$2.8M
From annual financial disclosures, which report every asset and debt as a bracket — so these are ranges, and the figure shown is their midpoint. A primary residence is not a reportable asset while its mortgage is a reportable debt, which pushes some members negative. How this is calculated →
Overall lean (DW-NOMINATE)
Issue profile
Each issue runs left ↔ right, scored from how the member voted on bills tagged to that issue (−1…+1). Issues with too few votes are blank. Overall lean uses DW-NOMINATE.
How they score against the parties
Bill Cassidy's voting record compared with each party's national platform, issue by issue — the same similarity score used across the site.
On the political map
Bill Cassidy (the large ringed dot) among every current member of Congress and the party platforms.
Each small dot is a current member (Dem · Rep); the larger dots are party platforms — click one for its closest members. Economic axis: taxes, healthcare, labor, energy. Social axis: abortion, guns, immigration, civil rights, crime.
Do you vote like Cassidy?
Answer a few questions on the issues and see which members of Congress — and which party — actually line up with you.
Caucuses & committees
Where Cassidysits in Congress's own organization — each group's lean is computed from its members' voting records. Explore them all on the caucuses and committees pages.
Committees
- Senate Committee on Energy and Natural Resourcescenter · 20 members
- Senate Committee on Financecenter · 27 members
- Senate Committee on Veterans' Affairscenter · 19 members
Most and least aligned members
Treating Cassidy's 14 issue scores as a vector, cosine similarity measures whether two voting records point the same way (+100%) or in opposite directions (−100%) — the colleagues whose records align most and least with theirs.
Recent notable votes
Latest news
Stephanie Grace: Flaws and all, we’'ll miss Bill Cassidy’s style of legislating when he’s goneBill Cassidy lost the Republican primary but the senator is still trying to remind the Louisiana voters who ditched him of what he delivered. Columnist Stephanie Grace thinks that’s fair, and predicts the state will miss his bipartisan advocacy when he’s gone.
The Advocate · October 11, 2026
Republican leadership of Senate health panel in doubtTight polls for Republicans are throwing future GOP leadership of the Senate health panel into question. With Sens. Roger Marshall, R-Kansas, and Susan Collins, R-Maine, fighting difficult reelection battles, it’s unclear who will replace Louisiana Sen. Bill …
Biztoc.com · October 8, 2026
Iran war powers measure falls short in Senate, despite new GOP supportShahid Beheshti University in the Velenjak district of Tehran, Iran, after a US military strike on 6 April.Photograph: Anadolu/Getty Images Senate Republicans on Thursday blocked a Democratic effort to end the US war with Iran, voting 49-50 against a Hous…
Yahoo Entertainment · September 24, 2026
Senate Republicans Refuse to Rein in Trump’s Iran War AgainSenate Republicans have once again refused to rein in President Trump’s war on Iran, voting 49–50 to block a war powers resolution on Thursday, choosing to allow the president to continue his $45 billion failed effort.The razor-thin margin saw four Republican…
The New Republic · September 24, 2026
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