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.
Todd Gloria
Upon the resignation of Mayor Bob Filner on August 30, 2013, Gloria became the interim mayor of San Diego, with limited powers. This made San Diego the second largest city in the United States (after Houston) to have an openly gay mayor at that time. He served until March 3, 2014, when mayor-elect Kevin Faulconer was sworn in. While serving as interim mayor, he remained the city councilmember for District 3 and retained the title of city council president; however, City Council President Pro Tem Sherri Lightner carried out the duties of the council president. Gloria was considered a possible candidate to replace Filner, but chose not to run.