---
type: Candidate
title: "William M. Cassidy"
description: "U.S. Senate candidate, LA (2026)"
office: "U.S. Senate"
state: "LA"
party: "REP"
stance: "incumbent"
election_year: 2026
status: "statutory candidate"
committee:
  name: "BILL CASSIDY FOR US SENATE"
  id: "C00543983"
ids:
  fec: "S4LA00107"
sources:
  - field: filing
    source: FEC (Federal Election Commission)
confidence: official
tags: [candidate, federal, senate, la]
timestamp: "2026-07-03"
---

# William M. Cassidy

Republican incumbent for U.S. Senate (LA), 2026.

## Campaign Committee

- BILL CASSIDY FOR US SENATE (C00543983)

## Source

- filing: FEC (Federal Election Commission)

Federal candidate filing; not yet linked to an officeholder record.