FPPC Jurisdiction & Campaign Disclosures

To learn more about the FPPC’s jurisdiction and what campaign disclosures are made with respect to this special election, please see our November 4, 2025 State Special Election Information Fact Sheet.

Last Modified: September 19, 2025

Below are lists of the top 10 contributors to committees that have raised at least $1,000,000 and are primarily formed to support or oppose a state ballot measure or a candidate for state office in the November 2025 special election. 

The lists do not show all contributions to every state ballot measure, or each independent expenditure committee formed to support or oppose a state candidate, only those committees that have raised $1,000,000 or more and have at least one contributor of $10,000 or more.

For itemized contribution and expenditure reports on state ballot measures, go to the CA Secretary of State’s Ballot Measure.

For itemized contribution and expenditure reports on state candidates, go to the CA Secretary of State’s Candidate.

The top 10 lists reflect the most recently available data. During the 90 days before an election the FPPC makes every attempt to ensure that the lists are updated within one business day of receiving new information. Otherwise, the top contributor lists are updated weekly.

Top Contributors List

Aggregate Contributions to Support or Oppose a Ballot Measure or Candidate

The following are the total amounts donated by top contributors to each state ballot measure that has qualified for the election. These lists reflect contributions as reported by Primarily Formed Committees.

Prop Number Circulating Title Top Aggregated Contributions
Prop. 50 ACA 8 (Rivas) Congressional Redistricting. (Res. Ch. 156, 2025) Support: $30,738,382.26
Oppose: $35,226.492.56
     
Total from top contributors $65,964,874.82

Contributions to Committees - Formed to Support or Oppose a Ballot Measure

Supporting

Committee: The Election Rigging Response Act, Governor Newsom's Ballot Measure Committee - 1380675

Number Contributor State Total Contributions
1 HMP for Prop 50 (FED PAC ID #C00495028) DC $7,610,000
2 California Teachers Association Issues PAC CA $3,000,000
3 Newsom for California Governor 2022 CA $2,600,000
4 California Nurses Association CA $2,500,000
5 Michael Moritz CA $2,500,000
6

Dignity CA Service Employees International Union SEIU Local 2015

Top Donors to Contributor: SEIU COPE (Service Employees International Union Committee on Political Education) (FED PAC ID #C00004036); Service Employees International Union Political Education and Action Fund (SEIU PEA) (MPO)

CA $2,028,382.26
7 Gwendolyn Sontheim MN $2,000,000
8 Working for Working Americans Sponsored by United Brotherhood of Carpenters (MPO) DC $2,000,000
9 Democratic Action, Yes on 50, Sponsored by Democratic Governors Association (FED PAC ID #C00562983) DC $2,000,000
10 Reed Hastings CA $2,000,000
Total from top contributors $28,238,382.26

Committee: Advocacy Action Fund, Inc. (Nonprofit 501(c)(4)) - Yes on 50 - 1448578

Number Contributor State Total Contributions
1 Wendy Schmidt CA $500,000
2 Eric Schmidt CA $500,000
Total from top contributors $1,000,000

Committee: Progressive Era Issues Committee Supporting Yes on Proposition 50 - 1465256

Number Contributor State Total Contributions
1 Advocacy Action Fund CA $1,000,000
2 California Community Found CA $200,000
3 Quinn Delaney CA $200,000
4 Karen Frances Grove Trust CA $50,000
5 Elizabeth Allison Thomas CA $25,000
6 The Strauss Family Revocable Trust - Sandor Straus CA $25,000
Total from top contributors $1,500,000
Opposing
Number Contributor State Total Contributions
1 Charles Thomas Munger, Jr. CA $30,090,000
Total from top contributors $30,090,000
Number Contributor State Total Contributions
1 No on Prop 50 Congressional Leadership Fund (FED PAC ID #C00504530) DC $5,000,000
2 Susan Groff CA $50,000
3 Doug LaMalfa Committee (FEC ID #C00509422) CA $31,492.56
4 Probity International Corp. CA $20,000
5 AMMACASO, Inc. CA $20,000
6 Jasmine Moini CA $15,000
Total from top contributors $5,136,492.56

*When a state recipient committee is listed as a top 10 contributor and the state recipient committee has received contributions aggregating $50,000 or more, from a single source, during the current two-year election period, the contributors' names are disclosed and listed below. When two or more contributors of identical amounts qualify as top two contributors, only the most recent contibutor is disclosed.

Additional Resources

For more information about the Top 10 lists and the relevant legal authorities, go to Methodology and Legal Resources