We would like to know if we are succeeding and how we can do better. Replacing Amtrak Police. SMC - Home | County of San Mateo, CA Our Mission. Kevin Mullin (D) 55.4% 108,077 votes David Canepa (D) 44.5% 86,797 votes Race called at 5:28 PM PT on November 12, 2022 100% of votes counted Associated Press San Mateo County Supervisor, District 2 Top candidate wins seat.