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.
Angela Alioto
Alioto ran unsuccessfully for Mayor of San Francisco in the 1995, 2003, and 2018 elections. In 2003, Alioto placed third, failing to qualify for the subsequent runoff election.