The Ballot Brief
San Mateo County, California

California Assembly District 23

2 candidates are tracked for California Assembly District 23 on the November 3, 2026 ballot: Marc Berman and David G. Johnson. Candidate information follows official San Mateo County election filings; verify with the official election office linked below.

About this race

Marc Berman (Democratic) and David G. Johnson (Republican) meet on the November 3 ballot; Marc Berman is the incumbent, per the Secretary of State's list. June 2 top-two primary result: Marc Berman (DEM) 77.3 percent and David G. Johnson (REP) 14.6 percent advanced over Rick Giorgetti (REP) 8.0 percent, per the Secretary of State's Statement of Vote. California's top-two primary decides who prints in November; the field is the Secretary of State's Certified List of Candidates for the General Election (August 27, 2026). This seat is elected by district; only the district covering your address appears on your ballot.

What this office does

State legislator. State legislators write and vote on state laws and the state budget, which fund schools, roads, prisons, universities and health programs, and set the rules for local governments and elections. Each member represents one district and serves on committees that shape bills before a floor vote. Terms are two years in most state houses and four in most state senates.

This race. Elected by district: only voters who live in the district see this race on their ballot. The sitting officeholder, Marc Berman, is on the ballot.

California › San Mateo County › California Assembly District 23

Marc Berman

Marc Berman

Democratic Incumbent

Top priorities
  • Higher education policy
  • Business and professional regulation, cybersecurity and electric-vehicle infrastructure

Per the California State Assembly official roster.

Biography

Marc Berman represents California's 23rd Assembly District, covering San Mateo and Santa Clara counties. He chairs the Business and Professions Committee and the Select Committee on the Master Plan for Higher Education in California, and also serves on the Elections, Governmental Organization, and Insurance committees, per the Assembly's official roster.

David G. Johnson

Republican

Top priorities
  • Opposing new taxes and regulations
  • Parental rights and school choice

Per the San Mateo Daily Journal.

Biography

David G. Johnson is the Republican candidate for California Assembly District 23 on the November 3, 2026 ballot, per the Secretary of State's Certified List of Candidates (ballot designation: Small Business Owner). No campaign website was found as of September 7, 2026.

Next on your ballotCalifornia Assembly District 19

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Questions about this race

Who is running for California Assembly District 23 in 2026?

2 candidates are tracked for California Assembly District 23 on the November 3, 2026 ballot: Marc Berman and David G. Johnson. Candidate information follows official San Mateo County election filings; verify with the official election office linked below.

When is the California Assembly District 23 election in California?

Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for California are on the California election hub at theballotbrief.com.

How do I see my exact San Mateo County ballot?

Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.

Verify this race

Candidate roster from official San Mateo County and state election office filings. Bios and priorities carry their attribution inline.

Cross-check with the official California election office, or see the full San Mateo County sample ballot and your exact ballot by address.

The rest of your San Mateo County ballot

3 tracked races in San Mateo County, California. Landed here from another county's search? Look up your own ballot below.

Also on your ballot
California Assembly District 21See all 3 San Mateo County races
Candidate profiles
Marc Berman, full profileDavid G. Johnson, full profileOfficial California election office