Oathstar

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

Mike Thompson

Democrat 14th term Up 2026
97LoyaltyMed 98
100AttendMed 98
12BipartMed 12
13BreaksMed 7

Position · −0.39

LEFTD · R RANGESRIGHT
In office
House 1999–now
27 years in CongressMore senior than 93% of the House
Breaks on
  • Agriculture and Food 25%
  • Finance and Financial Sector 23%
Committees
  • Ways and Means
Bills on
  • Taxation
  • Agriculture and Food
  • Health
Age
75

2026 election

Running for re-election
General election Nov 3, 2026

Also running

See the full race

Bottom line

Where Thompson has influence

Roles

  • Ranking Member · Tax (Ways and Means)

Bills on the move

None of Thompson’s bills has left committee this Congress.

Talks most about

  • Rural Health Care 1 statementIntroduced bill to expand rural health care access and boost agriculture support
  • AI Infrastructure Impact 1 statementCalled on Speaker to address AI risks including job losses, cybersecurity breaches, and weapons development
  • Voting Access 1 statementFiled amicus brief challenging executive order limiting mail-in ballots before 2026 midterms

Stories in Thompson’s press releases with their latest stance, last three months. Read by AI.

Where Thompson breaks with Democrats

Method

Share of party-line votes on each issue where Thompson voted against most Democrats. The tick is the median for House Democrats.

  1. Agriculture and Food 25% · 2 of 8 party 0%
  2. Finance and Financial Sector 23% · 3 of 13 party 8%
  3. Commerce 13% · 1 of 8 party 0%

Every issue Pro See all 8 issues where Thompson has broken with Democrats, and filter the voting record to those votes.

Try Pro

Notable votes

Full record (Pro)

Where Thompson broke with their party, close outcomes and final passage votes on named bills, newest first.

DateMeasureTitleVote Party split (yea)Result
Sep 1, 2026 H.R. 6500 Continuing Appropriations and Extensions Act, 2027On Motion to Suspend the Rules and Concur in the Senate Amendments · This bill provides continuing FY2027 appropriations for federal agencies and extends various expiring programs and authorities.Broke w/ party Nay Passed
370–48
Jul 21, 2026 H.R. 6955 Main Street Capital Access ActOn Passage · Main Street Capital Access Act or the Main Street ActBroke w/ party Yea Passed
270–155
May 13, 2026 H.R. 1346 To amend the Clean Air Act with respect to the ethanol waiver for Reid Vapor Pressure under that Act, and for other purposes.On Passage · Nationwide Consumer and Fuel Retailer Choice Act of 2025Broke w/ party Yea Passed
218–203
Apr 30, 2026 S. 4465 A bill to amend the FISA Amendments Act of 2008 to extend the authorities of title VII of the Foreign Intelligence Surveillance Act of 1978, and for other purposes.On Motion to Suspend the Rules and Pass · This act extends the authorities of Title VII of the Foreign Intelligence Surveillance Act (FISA) until June 12, 2026.Broke w/ party Nay Passed
261–111
Apr 30, 2026 H.R. 7567 Farm, Food, and National Security Act of 2026On Agreeing to the Amendment · This bill (commonly known as the farm bill) reauthorizes through FY2031 and modifies Department of Agriculture programs that addressBroke w/ party Yea Failed
186–238
Apr 30, 2026 H.R. 7567 Farm, Food, and National Security Act of 2026On Agreeing to the Amendment · This bill (commonly known as the farm bill) reauthorizes through FY2031 and modifies Department of Agriculture programs that addressBroke w/ party Yea Failed
210–216
Mar 27, 2026 H.R. 7084 Defending American Property Abroad Act of 2026On Passage · This bill authorizes the President to prohibit the entry of a vessel into the United States if the vessel has transited any U.S.Broke w/ party Yea Passed
247–164
Jan 22, 2026 H.R. 7148 Consolidated Appropriations Act, 2026On Passage · This bill provides appropriations to several federal departments and agencies for the remainder of FY2026 and provides continuing FY2026…Broke w/ party Nay Passed
341–88

Yea ■ filled · Nay □ open · Not voting – dash. Party split bars: Democrats left, Republicans right; dark = yea, light = nay.

What Thompson is saying

All 12 statements and posts

◇ statements (press releases) · ○ posts. When a statement names a bill Thompson voted on, the vote is shown next to it.

Effectiveness, 119th Congress so far

How it’s measured
0.22· expected 0.50

Below expectations

Rank 363 of 433 in the House · expected = average of 192 minority-party members without a committee lead

How far Thompson’s own bills got, weighted by substance. The average member scores 1.00.

  1. Introduced 20
  2. Action in committee 2
  3. Action beyond committee 0
  4. Passed chamber 0
  5. Became law 0

20 bills and joint resolutions sponsored: 0 significant (got a roll call vote), 20 substantive, 0 commemorative. Compare the House

How Thompson’s ratings compare with every representative

Ratings, 119th Congress

Scores run 0–100 and always sit next to a median. Each tick is one representative; the ringed marker is Thompson.

100/ 100

Chamber median 98 · 2 missed of 674

Voted on 672 of 674 roll calls; missed 2. Higher than 88% of House members.

15% 100%

Party loyalty

How it’s measured
97/ 100

House D median 98 · Rank 138 of 214

Sided with the Democratic majority on 469 votes that split the parties. Lower than 65% of House members.

45% 100%
12/ 100

Chamber median 12 · +0

Average agreement with members of the other party on contested votes. Higher than 51% of House members.

0% 70%
−0.39

Democratic middle 80%: -0.52 to -0.23

Left–right position from roll-call similarity (DW-NOMINATE, Voteview), from −1 to +1. Members who vote alike sit near each other.

Liberal Conservative

Bills, 119th Congress

All 27 sponsored bills

Sponsored 27 (House median 25) · cosponsored 400 (median 289), 133 of them as an original cosponsor · most often on Taxation, Agriculture and Food, Health.

Votes by issue

How votes are tagged
IssueVotesYea share
Congress156 16%
Economics and Public Finance69 26%
Armed Forces & National Security61 34%
Energy38 34%
Crime and Law Enforcement33 48%
Environmental Protection33 42%
Government Operations and Politics29 52%
Public Lands and Natural Resources28 61%
Commerce27 81%
International Affairs26 88%
Show all 32 issues
IssueVotesYea share
Finance and Financial Sector25 72%
Immigration17 35%
Education16 25%
Agriculture and Food14 71%
Science, Technology, Communications12 100%
Labor and Employment11 73%
Health8 75%
Taxation8 75%
Transportation and Public Works8 100%
Emergency Management7 86%
Law7 43%
Civil Rights and Liberties, Minority Issues5 80%
Native Americans5 100%
Animals4 50%
Families4 50%
Housing and Community Development4 100%
Procedural4 75%
Foreign Trade and International Finance3 100%
Social Welfare3 67%
Arts, Culture, Religion2 50%
Water Resources Development2 100%
Government operations & elections1 0%

How often Thompson voted with Democrats on each issue is part of Pro.

Who votes alike

Method

Agreement on contested votes where both cast yea or nay.

Most aligned

  1. DZoe LofgrenCA-1897%agreement
  2. DStacey E. PlaskettVI-AL97%agreement
  3. DPablo José HernándezPR-AL97%agreement

Full voting network Pro See all twelve closest allies, the members Thompson most often votes against, and the closest allies in the other party.

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Campaign money

Method

In the 2025–26 cycle Thompson’s campaign raised $4.2M: $2.3M (54%) from individuals and $1.8M (44%) from PACs and other committees. Cash on hand: $1.1M.

Through Jun 30, 2026; filings lag, so recent gifts can take weeks to appear. Money raised also counts loans and transfers, so the shares need not add to 100%. Source: FEC.gov.

Last cycle, party money, self-funding and debts are part of Pro. See Pro

Who funds Thompson

The largest PACs and other committees giving directly to the campaign this cycle, of 505.

  1. American College of Cardiology Membership group PAC
Amounts, the top 10 and who else they fundPro

See how much each organization gave Thompson this cycle and last, the mix of corporate, labor, trade and other PACs, and who else each one funds.

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Thompson’s own leadership PAC: Victory in November Election PAC. A separate PAC a member sponsors to give to other candidates.

Record over time

Historical record Pro Compare Thompson’s measures across every Congress on file.

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Résumé and contact

Career in Congress

  • U.S. House, CA-4Democrat2023–present
  • U.S. House, CA-5Democrat2013–2023
  • U.S. House, CA-1Democrat1999–2013

Seat

District
4
Current term
2025–2027
Age
75

Committees and roles

All committees

Contact

DC office
202-225-3311
268 Cannon House Office Building
District offices
Napa, Santa Rosa, Woodland
Mastodon
@repthompson@mastodon.social

Elsewhere

Oathstar ID osp_677h2ev4g4