Official portrait of Mike Thompson
U.S. House

Mike Thompson

U.S. Representative for California’s 4th District

Party
Democrat
In office since
January 6, 1999
Current term ends
January 3, 2027
Next election
November 2026
2026 election

Running for the House in CA-4

Candidates registered with the FEC for CA-4 in 2026
CandidatePartyRaisedCash on hand
Eric JonesDemocrat$8.4M$656K
Mike ThompsonIncumbentDemocrat$4.2M$1.1M
Raymond RiehleRepublican$115K$4,242
Laurie John MackenzieRepublican$14K$8,084
Sharon BrownRepublican$7,000$0
Mandy GhusarRepublican$7,000$0

From Federal Election Commission filings, reported through July 16, 2026. FEC records show who registered and raised money, not who won a primary or qualified for the ballot. Your state election office publishes the official ballot.

Committee assignments1
  • House Committee on Ways and Means
    • Health
    • TaxRanking Member
Contact
Washington office
268 Cannon House Office Building Washington DC 20515-0504

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Sources. Office, committee and contact records from the public congress-legislators dataset; portrait from the Government Publishing Office; 2026 fundraising totals from the Federal Election Commission. Updated September 24, 2026.