Home California Elections 2026 U.S. House District 4

U.S. House District 4

2026 general election.

Incumbents

Challengers

Campaign finance

Federal Election Commission filings for the 2026 two-year cycle. Candidates appear in the order they are listed on this page. They are not ranked by money, and these measures are never combined into a single score.

Every candidate below reports through Jun 30, 2026.

Reported campaign finance for each candidate with complete FEC data in the 2026 cycle
CandidateTotal receiptsCash on handDirect PAC receipts
Mike Thompson Democratic incumbent$4,204,013$1,075,737$1,847,811
Eric Jones Democratic$8,378,929$655,718$0

Each measure below has its own scale and starts at zero, so bars can be read against each other within a measure but not across measures. Every figure is reported through Jun 30, 2026.

Total receipts

Everything the authorized campaign committee took in, including contributions, loans, and transfers.

Highest total receipts: Eric Jones at $8,378,929. Lowest: Mike Thompson at $4,204,013. The largest reported value sets this scale at $8,378,929.

Cash on hand

The balance the campaign reported at the end of its coverage period.

Highest cash on hand: Mike Thompson at $1,075,737. Lowest: Eric Jones at $655,718. The largest reported value sets this scale at $1,075,737.

Direct PAC receipts

Money the campaign received from PACs and other political committees. This is not outside spending.

Highest direct PAC receipts: Mike Thompson at $1,847,811. Lowest: Eric Jones at $0. The largest reported value sets this scale at $1,847,811.

Outside spending supporting

Independent expenditures by other organizations supporting the candidate, not coordinated with the campaign and never received by it.

Highest outside spending supporting: Eric Jones at $1,254,085. Lowest: Mike Thompson at $1,150,453. The largest reported value sets this scale at $1,254,085.

Outside spending opposing

Independent expenditures by other organizations opposing the candidate, not coordinated with any campaign.

Highest outside spending opposing: Mike Thompson at $1,459,795. Lowest: Eric Jones at $600,000. The largest reported value sets this scale at $1,459,795.

Where each campaign's committee money came from

Each column is one candidate and each figure is that candidate's own money, taken over that candidate's own itemized total. Nothing here is added across candidates, and the two groupings below are never added to each other: the first is who the FEC says runs the giving committee, which covers every dollar, and the second is what interest a source says that committee advances, which is a claim MyRepTracker makes and covers only part of the money.

Contributions each campaign received, by who runs the committee

Contributions each campaign received for each compared candidate, grouped by who the FEC says runs the giving committee
CategoryMike Thompson DemocraticEric Jones Democratic
Corporate PACs$675,02036.8%$0
Trade association PACs$377,75020.6%$0
Leadership PACs$232,80012.7%$0
Non-connected committees$179,7509.8%$0
Membership organization PACs$145,5507.9%$0
Labor union PACs$106,2005.8%$0
Other candidates' committees$67,0033.7%$0
Corporations without capital stock$26,0001.4%$0
Cooperative PACs$23,0001.3%$0
Party committees$8130.0%$0
Itemized total$1,833,886$0

Contributions each campaign received, by interest advanced

Contributions each campaign received for each compared candidate, grouped by the interest the giving committee is categorized as advancing
CategoryMike Thompson DemocraticEric Jones Democratic
Insurance Finance, insurance, and real estate$169,50011.1%$0
Physicians and medical specialties Health$108,5007.1%$0
Electric utilities Energy and natural resources$90,7455.9%$0
Securities and investment Finance, insurance, and real estate$84,2505.5%$0
Pharmaceuticals Health$61,5004.0%$0
Construction Construction$58,5003.8%$0
Agribusiness Agriculture$53,0003.5%$0
Food and beverage Agriculture$45,0002.9%$0
Commercial banking Finance, insurance, and real estate$40,5002.6%$0
Public sector unions Labor$39,7002.6%$0
Real estate Finance, insurance, and real estate$37,0002.4%$0
Technology Communications and technology$34,5002.3%$0
Health insurance Health$33,5002.2%$0
Transportation unions Labor$31,0002.0%$0
Building trades unions Labor$24,7001.6%$0
Automotive Transportation$21,5001.4%$0
Telecommunications Communications and technology$19,0001.2%$0
Accounting Professional services$17,5001.1%$0
Oil and gas Energy and natural resources$15,5001.0%$0
Hospitals and nursing homes Health$15,0001.0%$0
Lawyers and law firms Professional services$14,0000.9%$0
Defense Defense$13,5000.9%$0
Nurses and nursing specialties Health$13,5000.9%$0
Renewable energy Energy and natural resources$13,0000.8%$0
Industrial unions Labor$12,0000.8%$0
Trucking Transportation$10,0000.7%$0
Credit unions Finance, insurance, and real estate$9,0000.6%$0
Air transport Transportation$7,5000.5%$0
Media and entertainment Communications and technology$7,5000.5%$0
Veterans Ideological and single-issue$7,5000.5%$0
Pro-Democratic Party Ideological and single-issue$1,0000.1%$0
Committees not yet categorized$424,37527.7%$0
Leadership PACs, party committees, and other candidates' committees$300,616$0
Itemized total$1,833,886$0

Independent spending supporting each candidate, by who runs the committee

Independent spending supporting each candidate for each compared candidate, grouped by who the FEC says runs the giving committee
CategoryMike Thompson DemocraticEric Jones Democratic
Non-connected committees$1,099,16095.5%$1,254,085100.0%
Membership organization PACs$51,2934.5%$0
Itemized total$1,150,453$1,254,085

Independent spending supporting each candidate, by interest advanced

Independent spending supporting each candidate for each compared candidate, grouped by the interest the giving committee is categorized as advancing
CategoryMike Thompson DemocraticEric Jones Democratic
Pro-Democratic Party Ideological and single-issue$600,00052.2%$0
Real estate Finance, insurance, and real estate$51,2934.5%$0
Committees not yet categorized$499,16043.4%$1,254,085100.0%
Itemized total$1,150,453$1,254,085

Independent spending opposing each candidate, by who runs the committee

Independent spending opposing each candidate for each compared candidate, grouped by who the FEC says runs the giving committee
CategoryMike Thompson DemocraticEric Jones Democratic
Non-connected committees$1,459,795100.0%$600,000100.0%
Itemized total$1,459,795$600,000

Independent spending opposing each candidate, by interest advanced

Independent spending opposing each candidate for each compared candidate, grouped by the interest the giving committee is categorized as advancing
CategoryMike Thompson DemocraticEric Jones Democratic
Pro-Democratic Party Ideological and single-issue$0$600,000100.0%
Committees not yet categorized$1,459,795100.0%$0
Itemized total$1,459,795$600,000

Last-minute contributions reported before an election

Within 48 hours of receiving a contribution or loan of $1,000 or more in the days just before an election, a campaign must notify the FEC. These notices are provisional: the same money appears again in the regular report covering those days, so it is not added to the amounts above and is not compared as a measure. Candidates file them only while their own election is close, so an absence here says nothing about a campaign's fundraising.

48-hour notices reported by candidates in this race
CandidateReported on noticesNoticesCoversState
Mike Thompson Democratic$281,64147May 14 to May 30, 2026Covered by regular reports
Eric Jones Democratic$235,9253May 15 to Jun 2, 2026Covered by regular reports

Direct contributions are money the campaign received. Independent expenditures are spending by other organizations that is not coordinated with any campaign, and are never added to a candidate's receipts. Source: Federal Election Commission ↗.