2018 San Francisco mayoral special election
Ed Lee, who was appointed Mayor of San Francisco in 2011 following Gavin Newsom's election as Lieutenant Governor of California, elected to a full term in 2011, and reelected in 2015, died of cardiac arrest on December 12, 2017. London Breed, the President of the San Francisco Board of Supervisors, became the city's acting mayor.
2003 San Francisco mayoral election
The 2003 San Francisco mayoral election occurred on November 4, 2003. The incumbent, Willie Brown, was termed out of office and could not seek a third term. The general election included three top candidates including then Supervisor Gavin Newsom and then President of the Board of Supervisors, Matt Gonzalez and former Supervisor Angela Alioto. No candidate received the required majority so the race went into a run-off of the two top candidates, which were Gavin Newsom and Matt Gonzalez. The run-off occurred on December 9, 2003 where Gavin Newsom was elected mayor of San Francisco.