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Mike Thompson's Campaign Funding and Committee Role

DEMU.S. HouseCA

By Christopher Smoot, Founder & Editor · Last verified against source: July 28, 2026

Data as of July 28, 2026 · Refresh this data →

Biography and Office

Born 1951.

Congressional service:

Committee Assignments

Why this matters: committee seats are where legislative influence actually happens -- they are frequently the direct explanation for which industries and interest groups direct money toward a given member.

Timeline

Who This Is

Rep. Mike Thompson, a Democrat representing California's 4th House district, has served in the U.S. House since 1999. This profile breaks down the $940,323.13 in direct organizational and PAC contributions he received in the current cycle, the $25,202.17 in supporting independent expenditures, and the combined estimated total support of $965,525.30. It also lists his top donors and notes his sole committee assignment on the House Ways and Means Committee.

Top Organizational Funders (Current Cycle)

The largest direct contribution came from Coombs & Dunlap, LLC, a law firm, which gave $10,000. The next largest donors each contributed $5,000, including the Laborers' International Union of North America (LIUNA) PAC representing construction labor, the Investment Company Institute PAC (ICI PAC) representing the investment‑management industry, Honeywell International PAC for the manufacturing and technology sector, and the Build PAC of the National Association of Home Builders for the housing construction industry. Among the independent‑expenditure groups, With Honor Fund II, Inc. spent $14,435.84 in support of Thompson, making it the top super‑PAC backing him. The Cooperative of American Physicians Independent Expenditure Committee contributed a further $10,000 in support. No independent expenditures opposed him, and the remaining supporting groups contributed modest amounts under $100 each.

Funding Pattern

Pattern observation: Thompson’s fundraising shows a mix of legal, labor, financial, manufacturing and housing interests. His seat on the Ways and Means Committee, which oversees tax policy, Social Security, and Medicare, aligns with the interests of the Investment Company Institute PAC, a major voice for the investment‑management sector that benefits from tax‑related legislation. The presence of the National Association of Home Builders’ Build PAC and the Laborers’ Union PAC reflects the committee’s jurisdiction over housing‑related tax credits and construction incentives. Honeywell International PAC’s contribution ties to the committee’s role in trade and manufacturing policy, which can affect tariffs and export incentives for industrial firms. The law‑firm donor Coombs & Dunlap, LLC may be interested in the committee’s influence over corporate tax law and regulatory issues. Independent‑expenditure support is modest, with just over $25,000 in backing and no recorded opposition spending, indicating limited super‑PAC contestation in this cycle. Because there are no recent tracked votes linked to specific bills, we cannot directly correlate his voting record with any of these donors’ policy preferences. Overall, the funding pattern is consistent with a senior member of Ways and Means who draws support from sectors that are directly affected by tax and fiscal legislation.

Contribution data sourced from FEC.gov public records. Campaign contributions to registered PACs are legal and regulated; this page reports facts without implying wrongdoing. The "Funding Pattern" section is AI-synthesized analysis, read, edited where needed, and approved by a human editor before publication. Full methodology: Editorial & Methodology.

Recent Voting Record

Source: U.S. House Clerk, Electronic Voting System. Showing most recent recorded votes.

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