Congress is out of session until Monday, November 9 for the midterm campaign. No new roll-call votes until then; the last were the House on Sep 16 and the Senate on Sep 30.

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

Mike Thompson

Democrat 14th term Up 2026

From public records: votes from Voteview, bills from congress.gov, money from FEC filings · votes updated Nov 1, 2026 · How we measure

Campaign money, 2025–26$5.5M raised · top PACs: American College of Cardiology, American Crystal Sugar Compay, American Federation of Teachers, AFL-CIO Committee on Political Education Breaks with Democrats most onFinance and Financial Sector: broke on 3 of 13 party-line votes (23%; most Democrats: 8%)
97LoyaltyMed 98
100AttendMed 98
12BipartMed 12
13BreaksMed 7
In office
House 1999–now
27 years in CongressMore senior than 93% of the House
Committees
  • Ways and Means 3rd minority
Age
75

2026 election

Running for re-election
General election Nov 3, 2026

Also running

See the full race

Activity

119th CongressJan 3, 2025 to Nov 1, 2026Method
By week
Statements
Bills introduced
Roll calls
Breaks with party
By yearStatementsStmtsBills sponsoredSpons.Bills passedPassedCosponsoredCospon.Roll callsVotesBreaks with partyBreaks
119th Congress2025–26, to date24628040867413
118th Congress2023–24not tracked—2203311,23520

Counts, not a score: statements as the Statements tab counts them, bills by introduction date, roll calls the member voted in, breaks on party-line votes.

1

What does he focus on?

MethodIssues tab →
Health 9% 11%
Agriculture and Food 1% 15%
Taxation 7% 33%

StatementsBills

Words go to Armed Forces and National Security, Government Operations and Politics and Health; bills go to Taxation and Agriculture and Food; the two overlap on Health.

  • He talks most about: Transportation Infrastructure (Transportation and Public Works), Cost of Living (Economics and Public Finance), Immigration Enforcement (Immigration), Constituent Services (Government Operations and Politics), Health Care Coverage (Health).
  • 27 bills sponsored, most on Taxation.
2

Does he have influence?

MethodBackground tab →
Ranking memberTax SubcommitteeWays and Means
MemberWays and Means Committee3rd minority

Ranking member on the Tax Subcommittee, more senior than 93% of the House, in the minority.

  • 27 years in Congress: more senior than 93% of the House.
  • Minority: Democrats hold 214 of the 433 filled seats.
5

Who does he work with?

MethodWho votes alike →

His cosponsorships on Republican bills

31% · peer median 19%

Closest across the aisle

Closest across the aisle Pro The members of the other party who vote most like Thompson.

Free account See Pro

Agreement on contested votes where both cast yea or nay, this Congress · Voteview

31% of his cosponsorships go to Republican bills (peer median 19%); closest in his party: Lofgren and Plaskett.

  • Other-party share of cosponsors on his own bills: not yet tracked.
  • Caucus memberships: not yet tracked.
3

Can he get things done?

MethodBills tab →

His billsExpected for a peer

Introduced 20 · expected 18
Action in committee 2 · expected 3
Beyond committee 0 · expected 1
Passed House 0 · expected 0
Became law 0 · expected 0
EffectivenessRank 364 of 433 in the House

0.22expected 0.34 · average member 1.00

0 of 20 bills passed the House; 0 became law; effectiveness 0.22 against a peer median of 0.34.

  • Amendments offered and adopted, earmarks in dollars: not yet tracked.

119th Congress so far · bills from congress.gov

4

Where does he stand?

MethodVotes tab →
Position, all votesDW-NOMINATE −0.39

With his party on all 12 areas with 10 or more party-line votes so far.

Major bills of the Congress · final passage

Voted with his party on 9 of the 10 he voted on.

The same ten bills on every profile, chosen by a rule from the roll calls, statements and lobbying filings on file · Method · party column: Democrats yea–nay on that roll call.

Votes with Democrats on 97% of party-line votes, breaks 13 times (peer median 5).

  • Position: −0.39, inside the Democratic middle 80%.
  • Most breaks by area: Finance and Financial Sector 3 of 13, Crime and Law Enforcement 2 of 24, Public Lands and Natural Resources 1 of 16.

Distance from party, not an ideology score · areas under 10 party-line votes not shown.

6

Who backs him?

MethodMoney tab →

Where the money comes from, 2025–26

Thompson$5.5M raised6%47%45%
House median$2.1M raised7%37%36%7%

Small-dollar individualsLarge individualsPACs and other committeesTransfers and other

Small-dollargifts of $200 or less

54% of what he raised came from individuals; 6% came in gifts of $200 or less (chamber median 7%).

$5.5M raised, 45% from PACs and other committees (chamber median 36%).

  • Last general election for the seat (2024): won by 32.9 points.

180 PACs of the 319 that gave belong to organizations that lobbied on bills he faced a vote on, cosponsored or sponsored.

Top lobbying issues of the organizations behind the PACs that gave to him: Taxation, Budget/Appropriations and Health.

  1. American College of Cardiology45% D
  2. American Crystal Sugar Compay56% D
  3. American Federation of Teachers, AFL-CIO Committee on Political Education100% D

What each PAC gave Pro Amounts, the full list and each organization’s lobbying are part of Pro.

Free account See Pro

Party split is the PAC’s giving to all federal candidates · FEC

What those organizations lobby on

245 bills

Thompson voted Yea on 32, Nay on 81, and sponsored or cosponsored 132 with no recorded vote.

7

Do his words match his actions?

MethodPositions tab →

Positions are being checked before they go public; this question fills in when they are.