2019 San Francisco mayoral election
London Breed was elected Mayor of San Francisco in a 2018 special election to serve until 2020, filling the unexpired term of Ed Lee, who was elected in 2011 and 2015, and died in office on December 12, 2017. Breed confirmed that she intends to run for re-election to a first full term in office in 2019.
Mayoralty of Dianne Feinstein
Dianne Feinstein became mayor pro-tem of the City and County of San Francisco, California on December 4, 1978, following the Moscone–Milk assassinations in which her predecessor in office, George Moscone and fellow member of the San Francisco Board of Supervisors, Harvey Milk, were assassinated by former supervisor Dan White. At the age of 45, Feinstein became the first female mayor of the municipality, and was formally elected to the position on November 4, 1979 and re-elected in 1983. She was prevented from seeking a third term in office and was succeeded in 1987 by Art Agnos.