Last Modified: September 15, 2026

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 2026 General 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.

*A contributor whose name is marked with an asterisk made a contribution to a committee that simultaneously supported or opposed more than one potential ballot measure for the same election. Because of this, it is not possible to determine the amount of the contribution that was spent specifically on the campaign for any particular measure. In these cases, the contributions are listed for each ballot measure the committee has been formed to support or oppose. This results in the same contribution appearing multiple times - once for each ballot measure the committee supports or opposes.

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.

*A contributor whose name is marked with an asterisk made a contribution to a committee that simultaneously supported or opposed more than one potential ballot measure for the same election. Because of this, it is not possible to determine the amount of the contribution that was spent specifically on the campaign for any particular measure. In these cases the contributions are listed for each ballot measure the committee has been formed to support or oppose. This results in the same contribution appearing multiple times - once for each ballot measure the committee supports or opposes.

Top Contributor Lists

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 or candidate that has qualified for the ballot. These lists reflect contributions as reported by Primarily Formed Committees.

PrOPOSITION NUMBER  Circulating Title Top Aggregated Contributions
Prop. 1 The Veterans and Affordable Housing Bond Act of 2026.

Support:
$8,259,136.88

Prop. 3 Proves Permanent Funding for Schools and Healthcare by Extending Existing Tax on High Incomes.

Support: 
$27,625,000

Prop. 37 California Middle-Class Homeownership and Family Home Construction Act of 2026

Support: 
$29,550,000

Prop. 38 Authorizes Bonds for Immunology Research. Initiative Statute. 

Support:
$48,200,000

Prop. 39 Establishes Additional Voter Identification and Citizenship Verification Requirements. Initiative Constitutional Amendment.

Support:
$
15,417,979.50

Oppose: 
$14,238,139.17

Prop. 40 Imposes One-Time Tax on Certain Individuals and Trusts. Initiative Constitutional Amendment and Statute.

Support:
$31,426,982.26*

Oppose: 
$52,150,000

Prop. 41 Requires Audits of Programs Funded by New State Special Taxes that are Excluded from Existing Voter-Approved State Spending Limit. Initiative Constitutional Amendment. 

Support:
$57,621,807.92

Oppose: 
$31,426,982.26*

Prop. 42 Prohibits New State Personal Property Taxes and Certain Retroactive State Taxes.  Initiative Constitutional Amendment. 

Support:
$60,072,537.26

Oppose:
$31,426,982.26*

Prop. 43 ACA 22 (Wicks) Local taxes: limitation. (Res. Ch. 132, 2026)

Support:
$13,973,217.78

Oppose: 
$1,600,500

Prop. 44 Requires Community Health Clinics Spend 90% of Revenue on Program Services. Initiative Statute. 

Support:
$16,929,633.88*

Oppose:
$16,714,878.89

Prop. 45 Modifies Environmental Review for Certain Projects. Initiative Statute. 

Support:
$30,024,059

Oppose:
$16,504,464.50

Total from top contributors $503,207,301.56*

 

Office Candidate TOP Aggregated Contributions
Governor Xavier Becerra Support: $10,300,000
Governor Stephen Hilton Oppose: $2,500,000
Insurance Commissioner Ben Allen Support: $1,108,126.64
Senator Brian Goldsmith Support: $1,930,000
Total from top contributors $15,738,126.64
 
 

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

 
Supporting

Yes on Prop 1 Californians for Homes, Jobs and Affordability 2026, Sponsored by Affordable Housing Organizations, #1485601

Number Contributor State Total Contributions
1

Building a Better California

Top Donors to Contributor: Sergey Brin; L. John Doer, III

CA $1,000,000
2

Western States Regional Council of Carpenters Issues Committee

Top Donor to Contributor: Western States Regional Council of Carpenters

CA $1,000,000
3

Californians for Affordable Homes, Yes on Proposition 1, sponsored by NPH Action Fund

Top Donors to Contributor: NPH Action Fund Political Issues Committee; Scott D. Cook

CA $700,000
4

Housing Trust Silicon Valley

CA $400,000
5

Eden Housing Management, Inc.

CA $350,000
6 MidPen Housing Corporation CA $350,000
7 Merritt Community Capital Corporation CA $250,000
8 Self-Help Enterprises CA $200,000
9 Silicon Valley Community Foundation CA $200,000
10 The San Francisco Foundation CA $200,000
Total from top contributors $4,650,000

 

Californians for Affordable Homes, Yes on Proposition 1, sponsored by NPH Action Fund, #1492745

Number Contributor State Total Contributions
1

NPH Action Fund Political Issues Committee

Top Donors to Contributor: San Francisco Housing Accelerator Fund; Cahill Contractors and Affiliated Entities 

CA $703,548.39
2 Scott D. Cook CA $150,000
3 H. Signe Ostby CA $150,000
4 Sequoia Living, Inc. CA $25,000
Total from top contributors $1,028,548.39

 

Opposing

No committee opposing this ballot measure raised enough money to reach the reporting threshold for this list.

Supporting

Yes on 37 - California Homeownership, #1481256

Number Contributor State Total Contributions
1

Homeownership for Families, sponsored by California Association of Realtors

Top Donor to Contributor: California Association of Realtors Issues Mobilization PAC; National Association of Realtors

CA $8,850,000
2

California Association of Realtors Issues Mobilization PAC (IMPAC)

CA $6,000,000
3

Building a Better California

Top Donors to Contributor: Sergey Brin; L. John Doerr, III

CA $6,000,000
4 United Brotherhood of Carpenters & Joiners of America DC $800,000
5

Western States Regional Council of Carpenters Issues Committee 

Top Donor to Contributor: Western States Regional Council of Carpenters 

CA $450,000
6 Northern California Carpenters Regional Council Issues PAC  CA $450,000
Total from top contributors $22,550,000

 

Homeownership for Families, sponsored by California Association of Realtors, #1400190

Number Contributor State Total Contributions
1

California Association of Realtors Issues Mobilization PAC

CA $5,000,000
2

National Association of Realtors

IL $2,000,000
Total from top contributors $7,000,000

 

Opposing

No committee opposing this ballot measure raised enough money to reach the reporting threshold for this list.

 
Supporting

Yes on 38: Californians for Life-Saving Immunology Research and Cures, sponsored by the Michelson Center for Public Policy, 1485847

Number Contributor State Total Contributions
1

Michelson Center for Public Policy, Inc. - Yes on 38 (Nonprofit 501(c)(4))

Top Contributor to Donor: Gary K. Michelson

CA $13,000,000
1 Gary K. Michelson and Affiliated Entity Michelson Center for Public Policy CA $8,200,000
2 Meyer Luskin CA $5,000,000
Total from top contributors $26,200,000

 

Michelson Center for Public Policy, Inc. - Yes on 38 (Nonprofit 501 (c)(4))

Number Contributor State Total Contributions
1 Gary K. Michelson CA $10,000,000
Total from top contributors $10,000,000

 

Opposing

No committee opposing this ballot measure raised enough money to reach the reporting threshold for this list.

Supporting

Californians for Voter ID, Yes on 39, #1479607

Number Contributor State Total Contributions
1 Richard Uihlein WI $10,500,000
2

Reform California with Carl De Maio - Ballot Measure Committee

Top Contributors to Donor: Kathleen Flynn, Kathryn Starr

CA $3,042,979.50
3 Nicole Shanahan CA $370,000
4 Douglas Leone CA $250,000
5 Stark Industrial LLC TX $250,000
6 Tyler Winklevoss NY $250,000
7 Cameron Winklevoss NY $250,000
8 Word & Brown CA $230,000
9 Aubrey Chernick CA $150,000
10 Kung-Yu Mathew Huang CA $125,000
Total from top contributors $15,417,979.50

 

Opposing

No on 39 - Block Election Rigging sponsored by nurses, teachers, and nonprofit labor and community health clinic organizations, #1493991 

Number Contributor State Total Contributions
1

The Tribal Council of the Federated Indians of Graton Rancheria

CA $2,000,0000
2

SEIU California State Council for Working People

Top Donor to Contributor: SEIU California State Council

CA $1,017,500
3

California Democratic Party

Top Donors to Contributor: Election Rigging Response Act, Newsom's Ballot Measure Committee; State Building and Construction Trades Council of California Independent Expenditure PAC

CA $1,000,982.15
4

Reed Hastings

CA $1,000,000
5

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); SEIU Local 2015

CA $1,000,000
6

California State Association of Electrical Workers Small Contributor Committee

CA $500,000
7

Western States Regional Council of Carpenters Issues Committee

Top Donor to Contributor: Western States Regional Council of Carpenters 

CA $500,000
8

Northern California District Council of Laborers Issues PAC

CA $500,000
9

California State Council of Laborers Issues PAC

Top Donor to Contributor: Laborers Pacific Southwest Regional Organizing Coalition Issues PAC 

CA $500,000
10

California State Pipe Trades Council PAC Small Contributor Committee

CA $500,000
Total from top contributors $8,518,482.15

 

No on Prop 39 - Californians for Voting Rights, sponsored by California Donor Table & ACLU of Northern California, #1489007

Number Contributor State Total Contributions
1 Patty Quillin CA $1,500,000
2 M. Quinn Delaney CA $1,500,000
3

ACLU of Nothern California Issues Committee

Top Donor to Contributor: American Civil Liberties Foundation of Northern California (501(c)(3)) Non Donor Funds

ACLU of Northern California Election Issues Committee

Top Donor to Contributor: American Civil Liberties Union of Northern California, Inc.

CA $471,067.40
4

California Donor Table Issues Committee

Top Donors to Contributor: Progressive Era Issues Committee; California Community Foundation (CCF)

CA $130,913.93
5 Wendy Munger CA $100,000
6

ACLU California Action Issues Committee

Top Donor to Contributor: ACLU of Northern California Issues Committee

CA $27,964.66
7 Common Cause DC $24,711.03
8 Karen Grove CA $10,000
Total from top contributors $3,764,657.02

 

 

United Against Prop. 39 -- Stop the Rig sponsored by nonprofit labor and civil rights organizations, #1495206

Number Contributor State Total Contributions
1

No on 39 - Block Election Rigging sponsored by nurses, teachers, and nonprofit labor and community health clinic organizations

Top Donor to Contributor: The Tribal Council of the Federated Indians of Graton Rancheria; SEIU California State Council for Working People

CA $2,000,000
Total from top contributors $2,000,000

 

 
Supporting

Yes on 40 - Billionaire Tax Now – No on 41 & 42, Sponsored by Service Employees International Union - United Healthcare Workers West, #1484470*

Number Contributor State Total Contributions
1 Service Employees International Union, United Healthcare Workers West (Nonprofit 501 (C)(5))  CA $22,048,461.16*
2 SEIU United Health Care Workers West Political Issues Committee CA $7,378,521.10*
3 SEIU United Health Care Workers West Political Action Committee CA $2,000,000*
Total from top contributors $31,426,982.26*
 
Opposing

Golden State Promise,1486695

Number Contributor State Total Contributions
1 Ripple Labs CA $5,000,000
2 Chris Larsen CA $5,000,000
3

California Business Roundtable Issues PAC

Top Donors to Contributor: Peter Thiel, Kim DeGeorge

CA $450,000
Total from top contributors $10,450,000

No on Prop 40 - Doctors, Teachers, Small Businesses, Working Families and Public Safety Against the Reckless Wealth Tax Experiment, #1492108

Number Contributor State Total Contributions
1

Building a Better California

Top Donors to Contributor: Sergey Brin; L. John Doerr, III

CA $41,500,000
2 California Primary Care Association Advocates CA $100,000
3

California Medical Association

CA $100,000
Total from top contributors $41,700,000

Supporting

Yes on Prop 43 - The Local Taxpayer Protection Act, sponsored by homeowners, businesses, and taxpayers, #1484860

Number Contributor State Total Contributions
1

California Business Roundtable Issues PAC

Top Donors to Contributor: Peter Thiel; Kim DeGeorge

CA $9,850,000
2

Protect Prop. 13, a project of the Howard Jarvis Taxpayers Association

Top Donors to Contributor: Californians to Restore Local Taxpayers' Right to Vote on Taxes; California Business Roundtable Issues PAC

CA $1,038,217.78
3 Kilroy Realty, LP  CA $1,000,000
4 Douglas Emmett Properties, LP and affiliated entities CA $1,000,000
5 1800 Capital, Inc. (Formerly Ace Beverage Group, Inc.) CA $500,000
6 Jerry A. Greenberg CA $250,000
7 McCourt Partners Real Estate, LLC CA $100,000
8 Andrew Schwartzberg MD $100,000
9 Moss Management Services, Inc. CA $85,000
10 The Beverly Hills Estates Inc. CA $50,000
Total from top contributors $13,973,217.78

 

Opposing

No on Prop 43 Stop the Local Taxpayer Deception Act, sponsored by labor organizations, #1492508

Number Contributor State Total Contributions
1

Western States Regional Council of Carpenters Issues Committee

Top Donor to Contributor: Western States Regional Council of Carpenters

CA $500,000
2

SEIU California State Council For Working People

Top Donor to Contributor: SEIU California State Council

CA $500,000
3 California Professional Firefighters Ballot Issues Committee CA $250,500
4 American Federation of State, County, and Municipal Employees California, AFL-CIO DC

$150,000

 

5 American Federation of State, County, and Municipal Employees California People Issues PAC CA $100,000
6

NPH Action Fund Political Issues Committee

Top Donors to Contributor: San Francisco Housing Accelerator Fund; Mercy Housing California

CA $100,000
Total from top contributors $1,600,500

 

Supporting

Yes on 45 - Building a More Affordable California, A Coalition of Water, Affordable Housing, Clean Energy, Small Business, Healthcare & Community Leaders, #1484853

Number Contributor State Total Contributions
1

Building a Better California

Top Donors to Contributor: Sergey Brin; L. John Doerr, III

CA $10,000,000
2

California Building Industry Association Issues Committee

Top Donors to Contributor: KB Home; Lennar Corporation 

CA $5,350,000
3

California Building Industry Association

CA $2,250,000
4 CalChamber Non-Donor Funds CA $2,000,000
5 Edison International & Affiliated Entities CA    $2,000,000
6 California Association of Realtors CA $1,500,000
7

CA Business PAC

Top Donors to Contributor: CRC Services, LLC (Francisco Leon); PG&E Corporation and Affiliated Entities

CA $1,350,000
8

California Hospitals Committee on Issues, (CHCI) sponsored by California Association of Hospitals and Health Systems (CAHHS)

Top Donors to Contributor: Kaiser Foundation Health Plan, Inc. and the Hospitals; Sutter Health

CA $500,000
9 California Resources Corporation and Subsidiaries CA $500,000
10

Building Resilient Infrastructure For A Decarbonized Green Economy Issues PAC, Funded by PG&E Corporation

Top Donor to Contributor: PG&E Corporation and Affiliated Entities

CA $500,000
Total from top contributors

$25,950,000

 

California Building Industry Association Issues Committee Supporting Proposition 45, #1353866

 

Opposing

No on Prop 45, sponsored by labor, health and environmental organizations, #1492264

Number Contributor State Total Contributions
1

Clean and Healthy California, Sponsored by Environmental Organizations

CA $7,004,750
2

Wendy Schmidt

CA $5,000,000
3

Members' Voice of the State Building and Construction Trades Council 
of California
** Affiliated with State Building and Construction Trades Council 
of California Independent Expenditure PAC

Top Donors to Contributor: State Building & Construction Trades Council of California; Operating Engineers Local Union NO. 3 Issues Advocacy Ballot Initiative PAC

CA $1,999,857.25
4

State Building and Construction Trades Council of California 
Independent Expenditure PAC
** Affiliated with Members' Voice of the State Building and 
Construction Trades Council of California

Top Donors to Contributor: International Union of Painters and Allied Trades District Council 16; California State Association of Electrical Workers

CA $1,999,857.25
5

District Council of Iron Workers of the State of California and Vicinity 
PAC

CA $500,000
Total from top contributors

$16,504,464.50

Contributions to Committees - Primarily Formed to Make Independent Expenditures on Candidates

Supporting

Working Families for Healthy Communities supporting Becerra for Governor 2026 sponsored by labor and community health organizations, #1490885

Number Contributor State Total Contributions
1 California Real Estate Independent Expenditure Committee - California Association of Realtors CA $2,750,000
2 Laborers Pacific Southwest Regional Organizing Coalition PAC CA $2,450,000
3 Pechanga Band of Indians CA $2,000,000
4

California Medical Association Independent Expenditure Committee

CA $1,400,000
5

Committee to Expand the Middle Class Candidate Committee, Sponsored by Airbnb, Inc.

Top Donor to Contributor: Airbnb, Inc. 

CA $1,000,000
6 California State Assocation of Electrical Workers CA $1,000,000
7 Meta Platforms, Inc. CA $950,000
8 Chevron USA, Inc. CA $500,000
9

Protect Small Businesses, Sponsored by McDonald's

Top Donor to Contributor: McDonald's USA, LLC

CA $500,000
10 DaVita Patient Protection Committee CA $500,000
Total from top contributors $10,300,000
 
 
Opposing

No committee opposing this candidate raised enough money to reach the reporting threshold for this list. 

Supporting

No committee supporting this candidate raised enough money to reach the reporting threshold for this list. 

Opposing

Greater Golden State, Opposing Hilton for Governor 2026, Sponsored by Organizations Opposing Republican Candidates for Governor, #1490569

Number Contributor State Total Contributions
1

Bloomfield, Bill

UT $1,000,000
2

Democratic Action, sponsored by Democratic Governors Association

DC $750,000
3

California Nurses Association Political Action Committee (CNA-PAC)

Top Donor to Contributor: California Nurses Association

CA $500,000
4

SEIU California State Council for Working People

Top Donor to Contributor: SEIU California State Council

CA $250,000
Total from top contributors $2,500,000

 

Supporting

Californians for an Affordable Future, Sponsored by California Environmental Voters, Supporting Ben Allen for Insurance Commissioner 2026, #1486438

Number Contributor State Total Contributions
1

Christian A. Larsen

CA $1,002,126.64
2 California Environmental Voters Independent Expenditure Committee CA $106,000
Total from top contributors $1,108,126.64
 
 
Opposing

No committee opposing this candidate raised enough money to reach the reporting threshold for this list. 

Supporting

Progressive Leadership for US, Brian Goldsmith for State Senate 2026, #1485542

Number Contributor State Total Contributions
1 Russell Goldsmith CA $815,000
2 Karen Mack Goldsmith CA $495,000
3 Martha Karsh CA $200,000
4 Nancy Marks NY $100,000
5 Nicholas Josefowitz CA $100,000
6 Marilynn Mack NV $50,000
7 Andrew Schwartzberg CA $50,000
8 Arie Belldegrun CA $50,000
9 Rebecka Belldegrun CA $25,000
10 Maria Hummer-Tuttle CA $22,500
11 Bob Tuttle CA $22,500
Total from top contributors $1,930,000
 
 
Opposing

No committee opposing this candidate raised enough money to reach the reporting threshold for this list. 

Additional Resources

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