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.
2003 San Francisco mayoral election
In 2003, then-Supervisor Gavin Newsom, a Democrat, ran in a large field of challengers, including Board of Supervisors President Matt Gonzalez, Supervisor Tom Ammiano, former Supervisor Angela Alioto, city Treasurer Susan Leal, and former Police Chief Tony Ribera. Newsom and Gonzalez took first and second place, respectively, but neither won a majority, so the two advanced to a runoff election. Third party advocates saw it as a chance to dethrone the Democratic Party.