Last Modified: July 9, 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. 3 Proves Permanent Funding for Schools and Healthcare by Extending Existing Tax on High Incomes.

Support: 
$19,025,000

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

Support: 
$19,700,000

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

Support:
$13,200,000

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

Support:
$30,485,652.27

Oppose: 
$10,450,000

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:
$48,271,807.92
Prop. 42 Prohibits New State Personal Property Taxes and Certain Retroactive State Taxes.  Initiative Constitutional Amendment.  Support:
$48,272,537.26
Prop. 43 ACA 22 (Wicks) Local taxes: limitation. (Res. Ch. 132, 2026) Support:
$13,973,217.78
Prop. 44 Requires Community Health Clinics Spend 90% of Revenue on Program Services. Initiative Statute. 

Support:
$16,929,633.88*

Oppose:
$14,877,345.61

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

Support:
$19,405,000

Oppose:
$3,999,857.25

Total from top contributors $258,590,051.97*

 

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

Californians for Protecting Public Education, Health Care and Budget Stability, Sponsored by Education and Labor Organizations, #1483562

Number Contributor State Total Contributions
1 California Teachers Association / Issues PAC CA $17,7750,000
2 California Federation of Teachers COPE Prop/Ballot Committee CA $750,000
3 PACE of California School Employees Association-Issues CA $500,000
Total from top contributors $19,025,000

 

Opposing

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

Supporting

CA Homes Committee, #1481256

Number Contributor State Total Contributions
1

Building a Better California

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

CA $6,000,000
2

Homeownership for Families, sponsored by California Association of Realtors

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

CA $4,000,000
3 California Association of Realtors Issues Mobilization PAC (IMPAC) CA $1,000,000 
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 $12,700,000

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

Californians for Immunology Research and Cures, sponsored by the Michelson Center for Public Policy, 1485847

Number Contributor State Total Contributions
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 $13,200,000

 

Opposing

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

 

 
Supporting

Save California Health Care and Public Education, 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 $21,107,131.17
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 $30,485,652.27
 
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

 

Supporting

Californians for a More Transparent and Effective Government, sponsored by Building a Better California, #1488423

Number Contributor State Total Contributions
1

Building a Better California

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

CA $48,250,000
2

Reform California with Carl De Maio - Ballot Measure Committee

CA $21,807.92
Total from top contributors $48,271,807.92

 

Opposing

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

 
Supporting

Californians to Protect Retirement and Life Saving, sponsored by Building a Better California, #1488418

Number Contributor State Total Contributions
1

Building a Better California

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

CA $48,250,000
2

Reform California with Carl De Maio - Ballot Measure Committee

CA $22,537.26
Total from top contributors $48,272,537.26

 

Opposing

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

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 committee opposing this ballot measure raised enough money to reach the reporting threshold for this list.

 
Supporting

Californians for Responsible Healthcare, Sponsored by Service Employees International Union - United Healthcare Workers West, #1483073

Number Contributor State Total Contributions
1 SEIU United Health Care Workers West Political Issues Committee CA $16,929,633.88*
Total from top contributors $16,929,633.88*
 
 
Opposing

Protect Patients: Stop the Attack on Community Health Centers and Clinics, sponsored by California Primary Care Association Advocates, #1484266

Number Contributor State Total Contributions
1 Altamed Health Services Corporation CA $4,717,867.69
2

North East Medical Services

CA $1,500,000
3

Family Health Centers of San Diego

CA $1,500,000
4

California Primary Care Association Advocates Issues Committee

California Primary Care Association Advocates (affiliated entities)

California Primary Care Association (affiliated entities)

CA $1,462,057.80
5

TrueCare

CA $1,000,000
6 San Ysidro Health  CA $1,000,000
7 Innercare CA $1,000,000
8 Wellspace Health CA $1,000,000
9 Neighborhood Healthcare CA $920,550.12
10 Community Health Center Network CA $776,870
Total from top contributors $14,877,345.61

Supporting

Committee to Build an Affordable California, sponsored by The California Chamber of Commerce, #1484853

Number Contributor State Total Contributions
1

Building a Better California

Top Donors to Contributor: Sergey Brin; Michael Moritz

CA $10,000,000
2

California Building Industry Association Issues Committee

Top Donors to Contributor: KB Home; Lennar Corporation 

CA $2,005,000
3 CalChamber Non-Donor Funds CA $2,000,000
4 Edison International & Affiliated Entities CA    $2,000,000
5

CA Business PAC

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

CA $1,150,000
6

California Building Industry Association

CA $1,000,000
7

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
8

California Water Service Company

CA $250,000
9

Modern Infrastructure Alliance Action Fund, Sponsored by Prologis

Top Donor to Conributor: Prologis, L.P.

CA $250,000
10 Yuhaaviatam of San Manuel Nation CA $250,000
Total from top contributors

$19,405,000

 

Opposing

One Voice for California, sponsored by labor, health and environmental organizations, #1492264

Number Contributor State Total Contributions
1

Clean and Healthy California, Sponsored by Environmental Organizations

Top Donors to Contributor: Advocacy Action Fund, Inc. (NonProfit 501 (C)(4)); Wendy Schmidt 

CA $2,000,000
2

Members' Voice of the State Building and Construction Trades Council of California

Top Donors to Contributor: Operating Engineers Local Union No. 3 Issues Advocacy/Ballot Initiative PAC; Laborers Local #300 (Intermediary for Unitemized Union Members Contributions)

CA $1,176,000
3

State Building and Construction Trades Council of California Independent Expenditure PAC

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

CA $823,857.25
Total from top contributors

$3,999,857.25

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.