Dean Preston

Major Donor

Summary Totals

Includes committee activity disclosed between 2025-01-31 and 2026-08-11

Total Contributions

None Available

Why is contribution data not available?

Total Expenditures

17500.0

Activity Details

First Name Last Name Total
Category Total
BRANDEE MARCKMANN FOR BOARD OF EDUCATION 2026 500.0
RE-ELECT MANO RAJU FOR PUBLIC DEFENDER 2026 500.0
RAMSEY ROBINSON FOR GOVERNOR 2026 500.0
FAIR HOUSING, YES ON I 10000.0
THE HARVEY MILK LGBTQ DEMOCRATIC CLUB POLITICAL ACTION FUND 2500.0
DJ BROOKTER FOR SUPERVISOR 2026 500.0
THE HARVEY MILK LGBTQ DEMOCRATIC CLUB POLITICAL ACTION FUND 3000.0

Late Period Contributions Made

Name Total
FAIR HOUSING, YES ON I 7500.0

Filings

This page displays campaign finance summary information calculated using only the most recent (“Latest”) versions of FPPC Forms 460, 496, and 497 filed by this committee. The table below lists the specific campaign statements used to calculate the totals shown on this page.

Campaigns may file additional disclosure statements or amendments that are not used to calculate the summary figures shown here. To view all required campaign finance filings for this committee, including older statements and other form types, visit the Ethics Commission's campaign finance statements database.

Click on the "Download attachment" button to download the advertisement attachment associated with a 496 Independent Expenditure Report, if it's available.

View Statements in Database

Filing Date Form Filing Period
2025-01-31 FPPC461 (Original)
2026-08-11 FPPC461 (Original)
2026-08-11 FPPC Form 497 - 24-hour Contribution Report (Original)
Page last updated 2026-08-21

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All candidate contests in the 2026-11-03 election

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Major Donor Committee

What is a Major Donor Committee?

A major donor committee is an individual or entity who makes contributions totaling $10,000 or more, in the aggregate, to officeholders, candidates, and recipient committees in a calendar year. They do not receive contributions, instead using their own funds to make contributions.

Committee details

Committee Name Dean Preston
Committee ID 1373175

View Data on DataSF

Summary Totals

The totals in this section represent the combined contributions raised and funds spent by a committees in the current election.

How This Data is Calculated

Total Contributions is calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and late contributions reported on Form 497 and Form 496P3.

Total Contributions does not include any loans received by the committee. Details about any loans received can be found in the Activity Details section.

Total Expenditures is calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E.

Total Expenditures does not include a committee's independent expenditures regarding candidates or ballot measures. Details about any independent expenditures made by the committee can be found in the Activity Details section.

Total Expenditures also does not include a committee's accrued expenses (unpaid bills). Details about any unpaid bills can be found in the Activity Details section.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Why is contribution or expenditure data not available?

Some state-level committees that are active within an election cycle are only required to file reports with the California Secretary of State, and not the San Francisco Ethics Commission. In these cases, contributions or expenditures data may not be available. Please refer to this committee's campaign statements in CAL-access.

View Statements in CAL-access

Summary Totals for

The totals in this section represent the combined funds and expenses for committees supporting or opposing the ballot measure.

How This Data is Calculated

Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and late contributions reported on Form 497 and Form 496P3. Only funds from primarily formed ballot measure committees are included. Expenses are calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E, and independent expenditures reported on Form 496.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Why is total funds or expenses data not available or 'None'?

Funds or expenses data may not be available or displayed as 'None' for several reasons:

  • Only funds from primarily formed ballot measure committees are included. Total funds does not include funds of other types of committees that have made independent expenditures supporting or opposing the measure.
  • No committee has reported contributions or expenditures to influence this measure.

About the contributors table

Contributors are individuals or entities who have made contributions to the candidate's or committee's campaign. The table lists contributors by their first and last names, along with the total amount they have contributed.

The data in this table is based on itemized contributions reported on Form 460 Schedules A and C. It also includes contributions received reported on Forms 496 ($100 or more) and 497 part 1 ($1000 or more) during the late report period.

Reporting Contributions Returned to a Contributor: Contributions returned within the same reporting period in which they were received are reported as a negative contribution on Form 460 Schedule A. Contributions returned in a different reporting period in which they were received are reported on Form 460 Schedule E as “Returned Contributions” (code = RFD).

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

About the expenditures table

Expenditures are the amounts spent by the candidate or committee on campaign activities. The table lists expenditures by their spending type and amount.

The data in this table is based on itemized payments reported on Form 460 Schedule E.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

About the loans table

The loans table lists loans received by a committee. The table groups all loans by lender name and sums up the amounts, and the amounts paid, forgiven, and outstanding.

The data in this table is based on the loans reported on Form 460 Schedule B1.

Loans amounts are not included in the total contributions in the "Summary Totals" section.

About the unpaid bills table

The unpaid bills table lists bills for goods or services that have not been paid by a committee. The table groups all unpaid bills by vendor/entity name and payment code, and sums up the outstanding bill amounts.

The data in this table is based on the unpaid bills reported on Form 460 Schedule F. Only items from a committee's Form 460 covering the most recent reporting period (with an outstanding balance greater than $0) are included.

Unpaid bills amounts are not included in the total expenditures in the "Summary Totals" section.

Contributions Overview

Unitemized contributions of less than $100

Committees are not required to itemize contributions of less than $100 received from a single source. The total amount of these contributions is reported as "Unitemized Contributions" in Form 460 Schedules A and C.

Contributions from San Francisco

Contributions from San Francisco are those made by individuals or entities with a reported address within San Francisco city limits, as determined by a pre-defined list of San Francisco zip codes.

Contributions from California

Contributions from California are those made by individuals or entities within California, based on the reported contributor address.

Contributions from individuals

Contributions from individuals are those made by persons, as opposed to entities such as corporations or other campaign committees. Unitemized contributions of less than $100 are not included in this total.

Candidate Controlled Committees

A candidate-controlled committee is a campaign committee that is controlled directly or indirectly by a candidate for local office.

How This Data is Calculated

Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C, and public funds received by candidates. Only funds from candidate committees are included. Total Expenses are calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Candidate Contests

This table sums up the total funds and expenses of candidate-controlled committees and primarily formed committees for each candidate contest in this election. Independent expenditures from third-party committees (such as general purpose committees and independent expenditure committees) are also included in the total expenses.

What is a Candidate-controlled Committee?

A candidate-controlled committee is a recipient committee that is controlled directly or indirectly by a candidate, or that is acting jointly with a candidate committee to make expenditures. Candidates are subject to a $500 contribution limit per contributor each election (subject to additional prohibited source rules). Candidates running for Mayor or the Board of Supervisors are also eligible to participate in San Francisco's Public Financing Program.

What is a Primarily Formed Committee?

A committee is “primarily formed” when it makes or initially plans to make more than 70% of its contributions and expenditures to support or oppose a specific candidate or measure, or a group of measures or specific local candidates all being voted upon in the same election on the same date.

What is a Third-Party Committee?

A third-party committee is a political committee that raises and spends money to support or oppose candidates for local office but operates independently of those candidates and their campaigns. These committees can include general purpose committees, independent expenditure committees and primarily formed candidate committees. They are prohibited from coordinating their spending decisions with any candidate or candidate controlled committee. Third-party committees are not subject to contribution limits.

How This Data is Calculated

Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C, late contributions reported on Form 497 and Form 496P3, and public funds received by candidates. Only funds from candidate committees and primarily formed committees are included. Total Expenses are calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E, and independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Ballot Measure Contests

This table sums up the total funds and expenses of primarily formed committees for each ballot measure in this election. Independent expenditures from third-party committees (such as general purpose committees and independent expenditure committees) are also included in the total expenses.

What is a Ballot Measure Committee?

A primarily formed ballot measure committee is a recipient committee that is formed to support or oppose one or more measures being voted on in the same election. Primarily formed ballot measure committees are not subject to contribution limits.

How This Data is Calculated

The totals shown represent the combined funds raised and spent by committees seeking to influence a ballot measure. Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and late contributions reported on Form 497 and Form 496P3. Only funds from primarily formed committees are included. Total Expenses are calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E, and independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Active Committees

This table sums up the total funds and expenses by each committee seeking to influence the ballot measure. Independent expenditures from general purpose committees and independent expenditure committees are also included.

What is an "Active Committee"?

Active committees are committees seeking to influence the ballot measure. This can include Primarily Formed Committees, general purpose committees, and independent expenditure committees.

How This Data is Calculated

The totals shown represent the combined funds raised and spent by a committee seeking to influence the ballot measure. Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and contributions received on Form 497 and Form 496P3. Only funds from primarily formed committees are included. Total Expenses are calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E, and independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Multi-Ballot Measure Committees

What is a "Multi-Ballot Measure" Committee?

"Multi-Ballot Measure" Committees are primarily formed to support or oppose more than one ballot measure.

How This Data is Calculated

The totals shown represent the combined funds raised and spent by all multi-ballot measure committees in the current election. Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and contributions received on Form 497 and Form 496P3. Total Expenses are calculated by summing the itemized and unitemized expenditures reported on Form 460 schedule E. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Top Contributors

This table shows the individuals or entities who have given the largest total monetary support to a committee or multiple committees.

Top Contributors are specific to the context of the page.

  • For an election, the top five contributors are calculated across Candidate Contests and Ballot Measures.
  • For a candidate contest, the top ten contributors are based on contributions received by candidate-controlled committees and committees primarily formed to support or oppose the candidate.
  • For a ballot measure, the top ten contributors are based on contributions received by committees primarily formed to support or oppose the measure.

Contribution amounts are aggregated by the contributor's first and last name as they are reported on campaign statements. If a contributor has a reported committee ID, the ID is also used to aggregate contributions.

Visit the Contributors page for an election to search for contributors across committees and see all committees within an election that a contributor has given to.

Top Spending Committees

This table shows the committees with the highest spending to influence one or more candidates or ballot measures in this election.

Top Committees Spending on Elected Offices include candidate-controlled committees, committees primarily formed to support or oppose candidates, general purpose committees, and independent expenditure committees.

Top Committees Spending on Ballot Measures include committees primarily formed to support or oppose ballot measures, general purpose committees, and independent expenditure committees.

Third-Party Support

This table sums up the total supportive funds and expenses for each candidate, from committees that are not candidate-controlled committees. These committees raise funds and make expenditures independently of any candidate's campaign.

How This Data is Calculated

Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and contributions reported on Form 497 and Form 496P3. Only funds from primarily formed committees are included. Total Expenses are calculated by summing the expenditures reported on Form 460 schedule D, and late period independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Third-Party Opposition

This table sums up the total opposing funds and expenses for each candidate, from committees that are not candidate-controlled committees. These committees raise funds and make expenditures independently of any candidate's campaign.

How This Data is Calculated

Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and contributions reported on Form 497 and Form 496P3. Only funds from primarily formed committees are included. Total Expenses are calculated by summing the expenditures reported on Form 460 schedule D, and late period independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Third Party Committees

This table summarizes activities from Committees that raise funds and/or spend money to support or oppose the candidates in this contest, independently of any candidate's campaign. These committees can include general purpose committees, independent expenditure committees and primarily formed candidate committees. They are prohibited from coordinating their spending decisions with any candidate or candidate controlled committee. Third-party committees are not subject to contribution limits.

How This Data is Calculated

Total Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and contributions reported on Form 497 and Form 496P3. Only funds from primarily formed committees are included. Total Expenses are calculated by summing the expenditures reported on Form 460 schedule D, and late period independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Independent Expenditures Supporting/Opposing Ballot Measures

This table shows spendings made independently of any campaign to support or oppose a ballot measure.

Expenditures data comes from Form 496, with total expenditures grouped by ballot measure and position reported on the form.

Form 496 disclosures are filed within the 90-day "late reporting" period preceding an election and are due within 24 hours of expenditures totaling $1,000 or more to support or oppose a single candidate or ballot measure.

The expenditure amounts in this table do not overlap with any expenditure amounts that may be disclosed in the “Expenditures Supporting/Opposing Candidates, Measures and Committees” section. To determine the committee's current total amount of independent expenditures supporting/opposing ballot measures, add the amounts in this table with totals in “Expenditures Supporting/Opposing Candidates, Measures and Committees”.

Independent Expenditures Supporting/Opposing Candidates

This table shows spendings made independently of any campaign to support or oppose a candidate for office.

Expenditures data comes from Form 496, with total expenditures grouped by name of candidate and position reported on the form.

Form 496 disclosures are filed within the 90-day "late reporting" period preceding an election and are due within 24 hours of expenditures totaling $1,000 or more to support or oppose a single candidate or ballot measure.

The expenditure amounts in this table do not overlap with any expenditure amounts that may be disclosed in the “Expenditures Supporting/Opposing Candidates, Measures and Committees” section. To determine the committee's current total amount of independent expenditures supporting/opposing candidates, add the amounts in this table with totals in “Expenditures Supporting/Opposing Candidates, Measures and Committees”.

Late Period Contributions Made

Contributions of $1000 or more made during the late reporting period (within 90 days before an election) that committees are required to disclose promptly.

Data comes from Form 497 Part 2.

Expenditures Supporting/Opposing Candidates, Measures and Committees

Payments made by a committee to support or oppose other candidates, ballot measures, or committees, beyond its primary focus.

Data comes from Form 460 Schedule D.

Payments are categorized by the following types:

  • a monetary contribution to another committee
  • a non-monetary contribution to another committee
  • an independent expenditure supporting/opposing other candidates or ballot measures

The expenditure amounts in this table do not overlap with any expenditure amounts that may be disclosed in the “Recent Independent Expenditures Supporting/Opposing Candidates” or “Recent Independent Expenditures Supporting/Opposing Ballot Measures" section. To determine the committee's current total amount of independent expenditures, add the amounts in this table with totals in those two tables.

Third Party Committees

This table summarizes activities from Committees that raise funds and/or spend money to support or oppose this candidate, independently of the candidate's campaign. These committees can include general purpose committees, independent expenditure committees and primarily formed candidate committees. They are prohibited from coordinating their spending decisions with any candidate or candidate controlled committee. Third-party committees are not subject to contribution limits.

How This Data is Calculated

Funds are calculated by summing the itemized and unitemized contributions reported on Form 460 schedules A and C and contributions received on Form 497 and Form 496P3. Only funds from primarily formed committees are included. Expenses are calculated by summing the expenditures reported on Form 460 schedule D, and late period independent expenditures reported on Form 496. Figures are rounded to the nearest thousand.

For more information about campaign finance forms and their reporting schedules, please visit the San Francisco Ethics Commission website.

Active committees in the November 03, 2026 election

Search by committee name or ID

Search for a specific committee by name or Committee ID. This list includes active state-level committees that may not file with the San Francisco Ethics Commission. For those committees, we provide links to their profiles on the California Secretary of State's CAL-ACCESS website.

Committee Committee ID
Alan Wong for Supervisor 2026 1485709
Alan Wong for Supervisor 2026 General 1489126
Albert Chow for Supervisor - General 2026 1492163
Alex Behrend for All - Supervisor 2026 1493283
Alida Fisher for Board of Education 2026 1492843
Autumn Brown Garibay for Board of Education 2026 1491849
Darshini Patel for Supervisor 2026 1488280
Deandra Bryant for Supervisor 2026 1490347
Dj Brookter for Supervisor 2026 1481892
Daniel Lurie for Mayor 2024 1463099
Elect Shawn M. Richard for District 10 Supervisor 2026 1491677
Elijah I. Ball 1492919
Gary Mc Coy for Supervisor 2026 1484080
Gee for Supervisor 2026 1490199
Greco for Supervisor 2026 1491969
J.r. Eppler for Supervisor 2026 1482707
Jeremy Greco for Supervisor 2026 1485253
Joaquin Torres for Assessor-recorder 2026 1487412
Joe Sangirardi for San Francisco Democratic County Central Committee 202... 1463427
John Jersin for Board of Education 2024 1468546
John Jersin for Board of Education 2026 1477601
Kim for School Board 2026 1483651
Laurance Lee for Board of Education 2026 1487911
Lori Brooke for Supervisor 2026 General 1484332
Manny Yekutiel for Supervisor 2026 1483804
Matt Dorsey for Supervisor 2026 1487329
Michael Nguyen for Supervisor 2026 1484606
Michela Alioto-pier for Supervisor 2026 1468206
Nick Berg for Supervisor 2026 1492180
P.j Bastiany for Supervisor 2026 1481624
Re-elect Mano Raju for Public Defender 2026 1487291
Reina Tello for School Board 2026 1490256
Ryan Hazelton for San Francisco Board of Education 2026 1491734
Stephen Sherrill for Supervisor 2026 General 1482285
Theo Ellington for Supervisor 2026 1484091
Turon for Board of Education 2026 1482971
Clean Up City Hall, Mayor Lurie's Ballot Measure Committee 1489257
Crush Ice SF, a Committee in Support of Proposition Tbd 1487105
Daniel Lurie Ballot Measure Committee - Safe, Affordable Muni for a Thri... 1479782
Fair Housing 1490845
Great Highway for Everyone 1487005
No on a, Stop the Engardio Recall 1477355
No on G, Save Sunset Dunes Sponsored by Friends of Sunset Dunes 1471154
Our City Our Bank 1488530
San Francisco Parent PAC 1442994
Workers Against Foreclosures 1493873
Yes on C - San Franciscans for Affordable Homes, Sponsored by the Nph Ac... 1492671
Yes on L, Fund the Bus 1468797
Alice B. Toklas Lgbtq Democratic Club PAC 842018
Edwin M. Lee Asian Pacific Democratic Club PAC 931558
Growsf Voter Guide 1433436
Hotel Council of San Francisco PAC 1381090
Ifpte Local 21 881248
National Union of Healthcare Workers Candidate Committee for Quality Pat... 1318200
North Coast States Regional Council of Carpenters Issues PAC 1219354
Nph Action Fund Political Issues Committee 1387772
San Francisco Apartment Association Political Action Committee 840002
San Francisco Democratic County Central Committee 742051
San Francisco Deputy Sheriffs' Association Political Action Committee 991828
San Francisco League of Pissed Off Voters 1374879
San Francisco Young Democrats 961946
SF Forward Sponsored by the San Francisco Chamber of Commerce 891575
Sheet Metal Workers Local Union 104 Political Committee 850381
Teamsters Union Local No. 665 PAC 1280975
the Harvey Milk Lgbt Democratic Club Political Action Fund 1383218
Ua Local 38 Cope Fund 746875
Uber Innovation Ballot Measure Committee 1466153
United Educators of San Francisco Candidate PAC 1311218
California Alliance for Jobs - Rebuild California Committee CAL-ACCESS 1241892
Committee to Expand the Middle Class Issues Committee, Sponsored by Airb... CAL-ACCESS 1437557
Friends of Sarah Mcbride CAL-ACCESS 01004707
Gfc Courage Committee - Bay Area Chapter CAL-ACCESS 1423911
Gfc Courage Committee - California Business Coalition CAL-ACCESS 1423919
Gfc Courage Committee - Common Sense Chapter CAL-ACCESS 1424659
Gfc Courage Committee - East Bay Chapter CAL-ACCESS 1416434
Gfc Courage Committee - Excellence in Education Chapter CAL-ACCESS 1420855
Gfc Courage Committee - Golden Gate Chapter CAL-ACCESS 1425929
Gfc Courage Committee - Marin Chapter CAL-ACCESS 1435894
Gfc Courage Committee - Palo Alto Chapter CAL-ACCESS 1416422
Gfc Courage Committee - San Francisco Chapter CAL-ACCESS 1416440
Gfc Courage Committee - Sierra Chapter CAL-ACCESS 1416442
Gfc Courage Committee - Southern California Chapter CAL-ACCESS 1435445
Govern for California Courage Committee CAL-ACCESS 1392639
Ibew Local 6 Political Account CAL-ACCESS 1056662
International Union of Elevator Constructors Local 8 PAC Sponsored by In... CAL-ACCESS 1220653
Jackie Speier for Supervisor 2028 CAL-ACCESS 1479012
Jesse Gabriel for Assembly 2026 CAL-ACCESS 1476845
Josh Becker for Senate 2028 CAL-ACCESS 1477807
Matt Haney for Assembly 2026 CAL-ACCESS 1476944
Patrick Ahrens for Assembly 2026 CAL-ACCESS 1476866
Re-elect Rick Chavez Zbur for Assembly 2026 CAL-ACCESS 1477252
Re-elect Scott Wiener for State Senate 2024 CAL-ACCESS 1434666
San Francisco League of Pissed Off Voters Slate Mailer Organization CAL-ACCESS 1432377
San Francisco Women's Political Committee Voter Guide CAL-ACCESS 1448359
San Francisco Yimby Slate Mailer Organization CAL-ACCESS 1472524
SF Eastern Neighborhoods Democratic Club Smo CAL-ACCESS 1405412
Teamsters Local No. 853 PAC CAL-ACCESS 1250157
Teamsters Local Union 350 PAC CAL-ACCESS 1406838
the Harvey Milk Lgbt Democratic Club Voter Guide CAL-ACCESS 1383194
Theatrical Stage Employees Local 16 International Alliance of Theatrical... CAL-ACCESS 1302106
Toni Atkins for Governor 2026 CAL-ACCESS 1466114
Union of American Physicians and Dentists Small Contributor Committee CAL-ACCESS 1356185
United Democratic Club Slate Mailer Organization CAL-ACCESS 1385852
United Food & Commercial Workers Local 5 PAC (Sponsored by United Food &... CAL-ACCESS 1294035
United Food and Commerical Workers Western States Council Candidate PAC CAL-ACCESS 910874
Westside Family Democratic Club Slate Mailer CAL-ACCESS 1466485
Dean Preston 1373175
Saikat Chakrabarti 1478129
San Francisco Laborer's Local 261 P.a.c. 981076