U.S. Representative · CA · District 4
Mike Thompson
DemocratTerm through January 2027
Funding profile · 2023–2024 cycle
4% of the money Thompson raised came from small donors.
More grassroots-funded than 44% of the House.
Thompson raised $2.4M across the two-year election cycle (2023–2024), and ended the period with $1.2M cash on hand. Here is where the money came from.
- Small donors
- 4%$0.1M
- Large donors
- 33%$0.8M
- Bundled
- 0%$0.0M
- PACs
- 61%$1.5M
- Other
- 2%$0.0M
Against the house
How Thompson compares to the typical member.
- Small-donor share
- 4%vs 5% house median
- PAC share
- 61%vs 37% house median
Who has a stake in Thompson
The organizations behind the money.
Thompson's largest organized backing comes from National Automobile Dealers Association PAC. That counts the group's own PAC check plus the individual donations it bundled, not just the direct check.
Money organized for Thompson
National Automobile Dealers Association PAC›
$10K
National Automobile Dealers Association PAC›
$10K
The National Automobile Dealers Association's PAC, representing franchised car dealers.
Who it funds, across Congress
31% Democrats · 69% Republicans · $2.4M to 323 members
Investment Company Institute PAC - Ici PAC›$10K
Who it funds, across Congress
43% Democrats · 57% Republicans · $988K to 161 members
Honeywell International PAC›$10K
Who it funds, across Congress
53% Democrats · 47% Republicans · $1.7M to 259 members
National Association Of Home Builders›$10K
The National Association of Home Builders' PAC, representing residential construction firms.
Who it funds, across Congress
20% Democrats · 80% Republicans · $2.0M to 315 members
Outside spending, by party
Spent $438K to elect Republicans.
Ubs Americas Inc. PAC›$10K
The PAC of UBS, the global investment bank, funded by its U.S. employees.
Who it funds, across Congress
53% Democrats · 47% Republicans · $1.5M to 172 members
The same money, by industry
Which industries have a stake.
The same organized money, grouped by the industry of the organization that moved it. It shows the interests behind Thompson's backing, not just the individual groups.
Plus $459K from organizations whose FEC name did not sort into an industry.
The money spent about Thompson
Spent for or against.
Outside groups also spend on their own to elect or defeat Thompson, running ads for or against the race. This money never passes through the campaign, so it is counted apart from the money organized for Thompson.
With Honor Fund II,$15K
To help Thompson$15KTo hurt Thompson—
With Honor Fund II,$15K—$15K
FEC filings, 2023–2024 cycle · as of August 2026 · showing the top 5 funders of 344 organizations with a stake
About this data
FEC-disclosed receipts for the 2023–2024 cycle. This is the disclosed money only. Spending by outside groups that do not reveal their donors, the dark money that set a record in 2024, never appears in these figures.
Every percentage here is a share of all receipts, not of individual contributions only. So the small-donor share counts transfers, loans, and other money in its base, and can read higher than figures that divide only by individual money.
PAC figures are contributions to Thompson's campaign committee from FEC filings. Industry labels are grouped from each committee's name and are approximate. Joint fundraising committees and small-dollar conduits like ActBlue and WinRed are not counted.
Support for requiring the groups that spend on elections to name their donors, across both parties. Congress has not passed the DISCLOSE Act.
Where Thompson stands