
U.S. Representative
Mike Thompson
California District 4
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U.S. Representative
California District 4
Contact
Voting Profile
Most Active Policy Areas
270
Votes Analyzed
Data sources: voteview, congress.gov
Political Position
Mike Thompson's voting record places him as a progressive Democrat, with an ideology score slightly more liberal than his party's average. His positions generally align with the mainstream Democratic caucus while occasionally taking more left-leaning stances on certain issues.
Near the average for Democrats (-0.38)
Data source: VoteView NOMINATE scores (UCLA/UC San Diego)
Policy Positions
270
total votes analyzed
Overview
Representative Mike Thompson has served California in the U.S. House of Representatives as a Democrat, compiling a voting record that reflects progressive priorities across multiple policy areas. His most active legislative engagement has been in healthcare policy, where he has participated in 146 recorded votes. Thompson has shown strong support for defense-related legislation, voting in favor 82% of the time on defense matters. He has also been active on agricultural issues, which is notable given California's significant farming economy, supporting agricultural measures 59% of the time. His voting pattern suggests a legislator who generally follows Democratic Party positions while maintaining some independence on specific issues. The balance of his votes across budget, agriculture, and healthcare indicates engagement with both fiscal and social policy concerns.
Key Positions
By Policy Area
Analysis updated: January 9, 2026
Campaign Finance
Includes all authorized campaign committees (principal committee, joint fundraising, and other authorized committees). Outside spending by Super PACs and independent groups is shown separately below. Verify on FEC.gov →
Career: $28.9M
Fundraising Over Time
Contribution Sources
55%
45%
0%
Individual Breakdown
Itemized (>$200)
$2.1M
Small Dollar (<$200)
$198K
Donation Sizes
Share of individual contribution dollars by donation size, current election cycle.
Where the Money Comes From
Itemized individual contributions only (donations over $200 report the donor's state). Small-dollar donations are not included because the FEC does not itemize them.
Top Contributors
Top Contributing Industries
Top Donor Employers
Employer as self-reported by itemized donors. “Not Employed” and “Self-Employed” typically rank highest for small-dollar campaigns and include retirees.
Where the Money Goes
Spending by Purpose
Purpose categories are self-reported on FEC filings; large “Other” totals are common.
Top Payees
BEACON MEDIA LLC
CARDMEMBER SERVICES
CLEANSWEEP CAMPAIGNS
RCBS PAYROLL
ADVANCED NETWORK STRATEGIES, LLC
DCCC
REEDY, SUSAN
RIVER CITY BUSINESS SERVICES
Detailed Breakdown
Expenditures
Operating Costs
$4.1M
Operating Offsets
$21K
Net Operating
$4.1M
Refunds
Individual Refunds
$35K
Committee Refunds
$6K
Outside Spending (Super PACs)
Supporting
$56K
Opposing
$335.86
Total Outside Spending
$56K
Top Outside Spenders
WITH HONOR FUND II, INC.
COOPERATIVE OF AMERICAN PHYSICIANS INDEPENDENT EXPENDITURE COMMITTEE
BIPAC - BUSINESS INSTITUTE FOR POLITICAL ANALYSIS
FRIENDS OF JOHN SAWYER FOR SUPERVISOR 2012
COURAGE CALIFORNIA SUPER PAC
YOLO COUNTY DEMOCRATIC CENTRAL COMMITTEE FEDERAL ACCOUNT
MENDOCINO COUNTY DEMOCRATIC CENTRAL COMMITTEE
TOGETHER WE THRIVE
Independent expenditures are made without coordination with the candidate. Source: FEC Schedule E filings.
Voting Record
270 votes across 12 categories