PDIEMC Research

2026 Primary CA — Results Explorer

San Mateo County · 25 contests · updated 2026-07-08 09:46

Explore San Mateo by jurisdiction →Find a city, council district, school board, or special district and see every contest scoped to it.Statewide results by Region →Governor, the constitutional offices & Board of Equalization across every covered county — preliminary, many counties still missing.

Pick any contest for the precinct map, geographic breakdowns, regressions, and ecological inference.

Statewide · 11

GovernorXavier Becerra 32.1% · 199,183Lieutenant GovernorFiona Ma 29.2% · 187,835Secretary of StateShirley Weber 72.2% · 185,546ControllerMalia Cohen 71% · 182,919County ControllerJuan Raigoza 100% · 138,097TreasurerEleni Kounalakis 53.9% · 182,733Treasurer-Tax CollectorSandie Arnott 100% · 144,026Attorney GeneralRob Bonta 70.6% · 186,683Insurance CommissionerJane Kim 32.9% · 181,439Superintendent of Public InstructionRichard Barrera 25.5% · 160,234Board of Equalization District 2Sally Lieber 51.2% · 177,287

Congressional · 2

15th Congressional District94% of district in San MateoKevin Mullin 65.1% · 143,71916th Congressional District21% of district in San MateoSam Liccardo 77.3% · 40,242

State Assembly · 3

Assembly District 1939% of district in San MateoCatherine Stefani 76.6% · 26,402Assembly District 21Entire district in San MateoDiane Papan 78.7% · 115,743Assembly District 2333% of district in San MateoMarc Berman 77.5% · 41,272

San Mateo County · 5

Supervisor, District 2Noelia Corzo 93.3% · 28,535Supervisor, District 3Ray Mueller 84.8% · 46,974Assessor-County Clerk-RecorderDavid Canepa 56.2% · 162,903CoronerRobert Foucrault 100% · 140,401Judge of the Superior Court, Office No. 4Brian Donnellan 78.9% · 156,736

Schools · 1

County Superintendent of SchoolsHéctor Camacho Jr 53.7% · 160,945

Measures · 3

Brisbane School District, Measure B (2/3 Approval Required)Yes 71.7% · 2,264Ravenswood City School District, Measure a (55 Percent Approval Required)Yes 69.8% · 3,478Redwood City Elementary School District, Measure C (2/3 Approval Required)Yes 65.3% · 23,969