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Funding profile

Mike Thompson

Democrat · Representative for California’s 4th district

Career totals · 15 elections · 19982026

$28.9 million

raised by Thompson’s campaigns, everything from 1998 to 2026 added together.

52%

of it came from organized groups rather than from people giving on their own: at least $14.9 million from PACs, plus donations that organizations collected and directed.

$3.3 million

was spent about Thompson by outside groups. These are ads for or against them that their campaign cannot control, and none of it is part of the money above.

Every number on this page comes from Federal Election Commission filings, read on August 24, 2026. An election still under way keeps raising money, so its figure will have grown since. Check Thompson on FEC.gov

Where the money came from

Everything Thompson’s campaigns have reported raising, split by who gave it.

$28.9 millionraised
  • Individual donorsMoney given by people, in their own name.47%$13.5 million
  • Political action committeesOrganized groups: company-run committees, unions, trade associations.52%$14.9 million
  • Other sourcesParty transfers, the candidate's own money, loans and smaller categories.2%$551,000
Federal Election Commission filings across 15 elections. Percentages may not total 100 because each is rounded.

Money bundled through organizations

Not every “individual” donation arrives on its own. An organization can collect checks from its members, already earmarked for Thompson, and deliver them in a bundle. The law counts that as individual money, but the organization still chose where it went.

$7,980

reached Thompson this way, <1% of everything they raised from individuals. Each donation came from a real person. The organization picked who got it.

  • JStreetPAC$6,980
  • NORPACA New Jersey-based pro-Israel PAC that bundles member donations for candidates of both parties.$1,000

We can only count the organizations we have measured, so the real figure could be higher than this, never lower. Bundling is legal and widely used, and appearing here is not evidence of wrongdoing.

Who gave the most

Committee contributions from the 2024 and 2026 election periods, grouped by how the FEC classifies each giver. This covers a slice of the career total, and giving to a campaign is legal and ordinary.

  • Corporation40%$1.3 million
  • Trade association22%$756,000
  • Labor union7%$221,000
  • Membership organization10%$339,000
  • Co-operative1%$43,000
  • Corporation without capital stock2%$55,000
  • Unclassified18%$617,000

Which industries

  • Real estate & construction20% · $41,000
  • Banking & finance10% · $20,000
  • Energy & utilities10% · $20,000
  • Legal & lobbying10% · $20,000
  • Insurance10% · $20,000
  • Other40% · $80,000

The FEC records that a committee is a corporation; it does not record its industry. Those labels are ours, kept in a published list anyone can check. Where we have not labeled a giver we say “Other” rather than guessing.

Largest committee givers

  1. 1American Institute of Certified Public AccountantsOther · Membership organization$25,000
  2. 2Branch 193 National Association of Letter Carriers Political Action CommitteeOther · Labor union$23,000
  3. 3American Council of Engineering CompaniesReal estate & construction · Trade associationThe trade association for engineering firms.$21,000
  4. 4American Investment CouncilBanking & finance · Trade association$20,000
  5. 5Fidelity National Financial Inc PAC 2001Other · Corporation$20,000
Show all 10 giversShow fewer
  1. 6Edison InternationalEnergy & utilities · Corporation$20,000
  2. 7Council of Insurance Agents & BrokersOther · Membership organization$20,000
  3. 8Employee Owned S Corporations of AmericaOther · Trade association$20,000
  4. 9National Multifamily Housing CouncilReal estate & construction · Trade association$20,000
  5. 10American College of CardiologyOther · Membership organization$20,000

“Unclassified” means the FEC records no organization type for that committee, which usually means a leadership PAC. We show it as unclassified rather than guessing which industry it belongs to.

Their money and their votes, side by side

For each industry that gave to Thompson: the money, then the bills they voted on in that industry’s area of law. The Library of Congress assigns each bill’s subject, not us, so nothing here is picked to make a point.

This is not evidence that money bought a vote. People often donate to politicians who already agree with them. We show what was given and how Thompson voted; the judgment is yours.

Banking & finance$20,000 given

Thompson voted on 26 bills in this area. The 3 most substantive are listed first.

  • H R 33On PassageTo amend the Internal Revenue Code of 1986 to provide special rules for the taxation of certain residents of Taiwan with income from sources within the United States.Yes
  • H R 736On Motion to Suspend the Rules and PassProtect Small Businesses from Excessive Paperwork Act of 2025 This bill extends the deadline for certain companies that are required to file beneficial ownership information with the Financial Crimes Enforcement Network (FinCEN).Yes
  • H J RES 25On PassageThis joint resolution nullifies requirements for persons effectuating decentralized financial (DeFi) transactions to report certain information regarding digital asset sales to the Internal Revenue Service (IRS).No
Show 5 more bills with full summariesShow fewer
  • H R 517On Motion to Suspend the Rules and Pass, as AmendedFiling Relief for Natural Disasters Act This act authorizes the Internal Revenue Service (IRS) to postpone federal tax deadlines for taxpayers affected by a qualified state declared disaster, upon written request by the state governor.Yes
  • H R 997On Motion to Suspend the Rules and Pass, as AmendedNational Taxpayer Advocate Enhancement Act of 2025 This bill authorizes the National Taxpayer Advocate to appoint legal counsel within the Taxpayer Advocate Service (TAS) to report directly to the National Taxpayer Advocate.Yes
  • H R 1491On Motion to Suspend the Rules and Pass, as AmendedDisaster Related Extension of Deadlines Act This act requires the Internal Revenue Service (IRS) to treat the postponement of the federal tax return deadline due to a federally declared disaster or certain other events as an extension of such deadline for purposes of calculating the limit on a tax refund.Yes
  • S J RES 28On PassageThis joint resolution nullifies the final rule issued by the Consumer Financial Protection Bureau (CFPB) titled Defining Larger Participants of a Market for General-Use Digital Consumer Payment Applications and published on December 10, 2024.No
  • S J RES 18On PassageThis joint resolution nullifies the final rule issued by the Consumer Financial Protection Bureau titled Overdraft Lending: Very Large Financial Institutions and published on December 30, 2024.No

Energy & utilities$20,000 given

Thompson voted on 45 bills in this area. The 3 most substantive are listed first.

  • H R 5184On Passageor the Affordable HOMES Act This bill rescinds Department of Energy (DOE) energy efficiency regulations applicable to manufactured housing and eliminates DOE’s authority to issue similar regulations.No
  • H R 4593On PassageSaving Homeowners from Overregulation With Exceptional Rinsing Act or the SHOWER Act This bill provides statutory authority for a revised definition of showerhead for the purpose of federal water efficiency regulations.No
  • H R 375On Motion to Suspend the Rules and PassContinued Rapid Ohia Death Response Act of 2025 This bill establishes requirements to research and control Rapid Ohia Death, which is the disease caused by the fungal pathogen known as Ceratocystis fimbriata that affects the tree of the species Metrosideros polymorpha .Yes
Show 5 more bills with full summariesShow fewer
  • H R 26On PassageProtecting American Energy Production Act This bill prohibits the President from declaring a moratorium on the use of hydraulic fracturing unless Congress authorizes the moratorium.No
  • H J RES 35On PassageThis joint resolution eliminates an annual waste emissions charge on oil or gas facilities under the Methane Emissions Reduction Program.No
  • H J RES 20On PassageThis joint resolution nullifies the rule titled Energy Conservation Program: Energy Conservation Standards for Consumer Gas-fired Instantaneous Water Heaters and submitted by the Department of Energy (DOE) on December 26, 2024.No
  • H R 4090On PassageThis bill directs the Department of the Interior to address mineral supply chain vulnerabilities, including by accelerating and expanding mineral production on federal land (i.e., National Forest System land, public lands, and any land that may be leased for the exploration, development, or production of hardrock minerals).No
  • H J RES 61On PassageThis joint resolution removes emission regulations on hazardous air pollutants under the rubber tire manufacturing source category, specifically from the rubber processing subcategory.No

Insurance$20,000 given

Thompson voted on 19 bills in this area. The 3 most substantive are listed first.

  • H R 736On Motion to Suspend the Rules and PassProtect Small Businesses from Excessive Paperwork Act of 2025 This bill extends the deadline for certain companies that are required to file beneficial ownership information with the Financial Crimes Enforcement Network (FinCEN).Yes
  • S J RES 28On PassageThis joint resolution nullifies the final rule issued by the Consumer Financial Protection Bureau (CFPB) titled Defining Larger Participants of a Market for General-Use Digital Consumer Payment Applications and published on December 10, 2024.No
  • S J RES 18On PassageThis joint resolution nullifies the final rule issued by the Consumer Financial Protection Bureau titled Overdraft Lending: Very Large Financial Institutions and published on December 30, 2024.No
Show 5 more bills with full summariesShow fewer
  • S J RES 13On PassageThis joint resolution nullifies the final rule issued by the Department of the Treasury’s Office of the Comptroller of the Currency titled Business Combinations Under the Bank Merger Act and published on September 25, 2024.No
  • H R 3394On Motion to Suspend the Rules and Pass, as AmendedFair Investment Opportunities for Professional Experts Act This bill expands the eligibility criteria for an accredited investor for purposes of participating in private offerings of securities to include an individual determined by the Securities and Exchange Commission (SEC) to have qualifying professional knowledge through educational or professional experience. (Certain unregistered securities may only be offered to accredited investors.) The bill also provides statutory authority for certain existing criteria for an accredited investor, including licensure or registration in good standing as a broker or investment adviser, specified annual salary, and specified net worth.Yes
  • H R 3234On Motion to Suspend the Rules and Pass, as AmendedThis bill increases the amount insured depository institutions may accept as reciprocal deposits. (Reciprocal deposits are used by institutions to increase the availability of deposit insurance by splitting large deposits using a reciprocal network of institutions.) The bill creates a tiered system so that the allowable amount is based on the institution's total liabilities.Yes
  • H R 4544On Motion to Suspend the Rules and Pass, as AmendedThis bill requires federal financial regulators to review and streamline the application process for the formation of de novo, or new, depository institutions or credit unions.Yes
  • H R 5317On Motion to Suspend the Rules and Pass, as AmendedThis bill changes the treatment of certain types of deposits so they are no longer classified as brokered deposits.Yes

We do not score these or say which way a vote favored an industry, because that would be our opinion dressed up as a finding. Each bill links to the chamber’s own roll-call record. Industries where fewer than three bills came to a vote are left out, because a handful of votes cannot show a pattern.

Money spent about this member

Outside groups, usually super PACs, may spend without limit on ads for or against a candidate, as long as they do not coordinate with the campaign. Thompson has no legal control over any of it.

This is not a donation. Nobody gave this money to Thompson. It was spent on advertising about Thompson, and money spent against a candidate is plainly not funding them. So it never gets added to the figures above.

$3.3 million

has been spent for or against Thompson by outside groups. $1.9 million supported Thompson; $1.5 million opposed Thompson.

Largest outside spenders

Summed across 9 elections, using the Commission's aggregated totals so amended filings and 24-hour notices are not double-counted.

Spent supporting

$1.9 million

Ads urging people to vote for this member. Still not their money, and they cannot direct how it is spent.

  • BDA PAC$1.3 million
  • ARTICLE ONE PAC$499,000
  • NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE$51,000
  • WITH HONOR FUND II, INC.$15,000
Show all 7 groupsShow fewer
  • COOPERATIVE OF AMERICAN PHYSICIANS INDEPENDENT EXPENDITURE COMMITTEE$10,000
  • COURAGE CALIFORNIA SUPER PAC$2,309
  • FRIENDS OF JOHN SAWYER FOR SUPERVISOR 2012$1,401

Spent opposing

$1.5 million

Ads urging people to vote against this member. This money was spent to defeat them.

  • NEW LEADERSHIP NOW$1.5 million

Election by election

The career figures above are the sum of these elections. Each row links to the Commission’s page for that election, where the numbers match line for line.

ElectionRaisedFrom PACsOutside spending
2026in progress$4.2 million$1.8 million 44%$3.3 million
2024$2.4 million$1.5 million 61%$25,000
2022$2.3 million$1.3 million 56%$1,444
2020$2.2 million$1.5 million 66%$2,121
2018$2.1 million$1.3 million 60%$103
2016$2.1 million$1.3 million 62%$20
2014$1.9 million$1.2 million 63%$10
2012$1.8 million$1.1 million 59%$2,715
2010$1.9 million$933,000 49%$605
2008$1.9 million$852,000 44%none
2006$1.7 million$696,000 40%none
2004$1.3 million$450,000 36%none
2002$965,000$360,000 37%none
2000$933,000$362,000 39%none
1998$1.2 million$364,000 31%none

Raised is everything the campaign took in for that election. From PACs is the slice of it given by political action committees. Outside spending is what other groups spent on ads about the race, for and against—it is not part of “Raised”. An election marked in progress is still raising money, so its figures are not final.

We never publish the names of individual donors, and anything we cannot source stays off the page. The methodology explains every such choice.