San Mateo County
Board of Supervisors
Coat of arms or logo
Type
Type
Term limits
3 terms (12 years)
Leadership
President
Dave Pine
since 2023
Vice President
Warren Slocum
since 2023
Supervisor, First District
Dave Pine
since 2011
Supervisor, Second District
Noelia Corzo
since 2023
Supervisor, Third District
Ray Mueller
since 2023
Supervisor, Fourth District
Warren Slocum
since 2013
Supervisor, Fifth District
David Canepa
since 2017
Structure
Seats5
Political groups
Officially nonpartisan
  •   Democratic (5)
Length of term
4 years, three term limit
Elections
Two-round system
Last election
November 8, 2022
Next election
November 5, 2024
Website
https://www.smcgov.org/bos

The San Mateo County Board of Supervisors is the five-member elected body that supervises the operation of San Mateo County, California. Board members represent one of five districts of roughly equal population within the county, elected, since a 2012 charter change, only by voters in their own district.[1] The current board members are Dave Pine (District 1), Noelia Corzo (District 2), Ray Mueller (District 3), Warren Slocum (District 4), and David Canepa (District 5).

Election results

2010

District 2 Election, June 8, 2010[2]
Candidate Votes %
Carole Groom 71,549 75.4
Daniel Kaul 23,381 24.6
Total votes 94,930 100.0
Voter turnout 23.7%
District 3 Election, June 8, 2010[3]
Candidate Votes %
Don Horsley 40,568 39.1
April Vargas 24,534 23.6
John Hickey 16,699 16.1
Matt Grocott 15,269 14.7
Michael Stogner 6,731 6.5
Total votes 103,801 100.0
Voter turnout 26.0%
District 3 Runoff Election, November 2, 2010[4]
Candidate Votes %
Don Horsley 98,146 56.4
April Vargas 75,875 43.6
Total votes 174,021 100.0
Voter turnout 50.2%

2011

An all-mail-ballot special election was held to fill the vacancy created when Supervisor Mark Church resigned to assume office as San Mateo County Chief Elections Officer & Assessor-County Clerk-Recorder on January 3, 2011.[5] The six candidates were San Mateo Union High School District Board President Dave Pine, San Mateo County Community College District Board of Trustees President Richard Holober, Millbrae City Council member Gina Papan, Burlingame Mayor Terry Nagel, retired aerospace engineer Demetrios Nikas, and victim advocate Michael Stogner.

District 1 Special Election, May 3, 2011[6]
Candidate Votes %
Dave Pine 23,856 26.8
Richard Holober 22,299 25.1
Gina Papan 21,796 24.5
Terry Nagel 8,683 9.8
Michael Stogner 6,269 7.1
Demetrios Nikas 2,870 3.2
Total votes 88,903 100.0
Voter turnout 26.0%

2012

Warren Slocum replaced termed-out District 4 Supervisor Rose Jacobs Gibson in January 2013 in the last at-large vote for Supervisor due to the passage of Measure B, mandating supervisorial elections by voters of the same district.

District 4 Election, June 5, 2012[7]
Candidate Votes %
Warren Slocum 37,542 38.4
Shelly Masur 20,989 21.4
Kirsten Keith 14,853 15.2
Carlos Romero 8,707 8.9
Memo Morantes 7,989 8.2
Andy Cohen 4,723 4.8
Ernesto "Ernie" Scmidt 3,085 3.2
Total votes 97,888 100.0
Voter turnout 29.0%
District 4 Runoff Election, November 6, 2012[8]
Candidate Votes %
Warren Slocum 131,015 54.7
Shelly Masur 108,373 45.3
Total votes 239,388 100.0
Voter turnout 66.2%

2022

Main article: 2022 San Mateo County elections

Both District 2 Supervisor Carole Groom and District 3 Supervisor Don Horsley were termed out. San Mateo-Foster City School District Trustee Noelia Corzo beat Belmont City Councilmember Charles Stone to replace Groom and Menlo Park City Councilmember Ray Mueller beat San Carlos City Councilmember Laura Parmer-Lohan to replace Horsley.

District 2 Election, June 7, 2022[9]
Candidate Votes %
Charles Stone 13,470 45.84%
Noelia Corzo 12,635 43.00%
Cameron Rolfe 3,282 11.17%
Total votes 35,195 100.0
Voter turnout 40.36%%
District 3 Election, June 7, 2022[10]
Candidate Votes %
Ray Mueller 13,888 34.45%
Laura Parmer-Lohan 12,778 31.70%
Virginia Chang Kiraly 7,986 19.81%
Steven Booker 5,659 14.04%
Total votes 47,048 100.0
Voter turnout 45.11%%
District 2 Runoff Election, November 8, 2022[11]
Candidate Votes %
Noelia Corzo 22,246 51.74%
Charles Stone 20,747 48.26%
Total votes 53,211 100.0
Voter turnout 61.23%%
District 3 Runoff Election, November 8, 2022[12]
Candidate Votes %
Ray Mueller 35,887 62.22%
Laura Parmer-Lohan 21,790 37.78%
Total votes 70,514 100.0
Voter turnout 67.79%%

2024

District 5 Supervisor David Canepa is up for reelection to his third term and both District 1 Supervisor Dave Pine and District 4 Supervisor Warren Slocum are term limited.

District 1

The incumbent is Dave Pine, who has represented the district since 2011 and was re-elected in 2020.[13] He is term limited in 2024.[14]

Candidates
Declared
Withdrew
Potential
Declined

District 4

The incumbent is Warren Slocum, who has represented the district since 2013 and was re-elected in 2020.[13]

Candidates
Declared
Potential
Declined

District 5

The incumbent is David Canepa, who has represented the district since 2017 and was re-elected in 2020.[13]

Candidates
Declared

References

  1. ^ Silverbarb, Bill. "Four enter race for supervisor: Race starting early, North County residents only to vote in 2016 district election". San Mateo Daily Journal. Retrieved 12 April 2015.
  2. ^ "Statement of the Vote, Gubernatorial Primary, June 10, 2010", page 766 of 821, Warren Slocum, Chief Elections Officer & Assessor-County Clerk-Recorder, Retrieved May 31, 2011.
  3. ^ "Statement of the Vote, Gubernatorial Primary, June 10, 2010", page 766 of 821, Warren Slocum, Chief Elections Officer & Assessor-County Clerk-Recorder, Retrieved May 31, 2011.
  4. ^ "Statement of the Vote, Gubernatorial General Election, November 2, 2010", page 213 of 345, Warren Slocum, Chief Elections Officer & Assessor-County Clerk-Recorder, Retrieved May 31, 2011.
  5. ^ "Filling the upcoming vacancy on the Board of Supervisors in 2011", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder, Retrieved May 31, 2011.
  6. ^ "Statement of the Vote, Consolidated Local Special Election, May 3, 2011", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder, Retrieved May 31, 2011.
  7. ^ "Statement of the Vote, Presidential Primary Election, June 5, 2012", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder.
  8. ^ "November 21, 4:30 p.m. Semi-Official Results, November 6, 2012 Presidential General Election", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder.
  9. ^ "Statewide Direct Primary Election June 7, 2022 Official Results", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder.
  10. ^ "Statewide Direct Primary Election June 7, 2022 Official Results", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder.
  11. ^ "Statewide General Election November 8, 2022 Official Results", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder.
  12. ^ "Statewide General Election November 8, 2022 Official Results", Mark Church, Chief Elections Officer & Assessor-County Clerk-Recorder.
  13. ^ a b c "March 3, 2020 Election Information | San Mateo County Assessor-County Clerk-Recorder & Elections - ACRE". smcacre.org. Retrieved 2023-07-14.
  14. ^ a b c "Candidates are jumping into local 2024 races – Palo Alto Daily Post". Retrieved 2023-07-14.
  15. ^ a b c staff, Jon Mays Daily Journal (2023-09-19). "Jackie Speier running for supervisor". San Mateo Daily Journal. Retrieved 2023-09-20.
  16. ^ a b c d e f g h i j k l m Simon, Mark (2023-06-15). "Notes, quotes and dust motes". San Mateo Daily Journal. Retrieved 2023-07-14.
  17. ^ Simon, Mark (2023-04-27). "The end of 'the San Mateo County way'". San Mateo Daily Journal. Retrieved 2023-07-18.
  18. ^ Simon, Mark (2023-06-29). "Pursuing happiness". San Mateo Daily Journal. Retrieved 2023-07-14.
  19. ^ Simon, Mark (2021-09-16). "Free Brisbane!". San Mateo Daily Journal. Retrieved 2023-07-18.
  20. ^ "Home | Re-Elect David Canepa for San Mateo County Supervisor". Canepa23. Retrieved 2023-07-14.

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