These are early, unofficial returns from NBC Bay Area's San Mateo County results page. Totals were cross-checked against ABC7's results page.

District 1

  • David Gorn: 67.01% (390)
  • Robert Brownstone: 32.99% (192)

District 4

  • Ron Kies: 59.43% (520)
  • Debbie Ruddock: 40.57% (355)

District 5

  • Susie Morasci: 58.59% (341)
  • Steven Booker: 41.41% (241)

ABC7 marks Robert Brownstone as the incumbent.

All results are unofficial election-night and early-morning counts as of Wednesday, Nov. 4. Counties keep counting mail and provisional ballots for days, and certification comes later, so margins can shift, especially in close contests.