So, what's next? The process of replacing Filner would move quickly:
— Once Filner leaves office, City Council President Todd Gloria (D) would become acting mayor.
— Then, a special election to fill Filner's place would be held within 90 days, as required by the city's municipal code. If no candidate receives a majority of the vote, a runoff would be held for the top two finishers within 49 days of the special election. Municipal elections in San Diego are technically nonpartisan.
Here are the names being mentioned by strategists and in local reports, in alphabetical order.
* State Assembly Leader Toni Atkins: A former member of the San Diego City Council, Atkins also spent a stint as acting mayor. She openly a lesbian, and a member of the California Lesbian, Gay, Bisexual and Transgender Legislative Caucus.
* Former assemblyman Nathan Fletcher: Fletcher ran for mayor in 2012. He finished in third place, with about 24 percent of the vote.
* Gloria: As president of the city council, he is already one of the city's most powerful politicians. Gloria is 35 and was first elected in 2008.
* Former state senator Christine Kehoe: Kehoe, who heads a collaborative effort to promote all-electric cars, was recently tapped to help overhaul the state parks system. Kehoe, a lesbian, once chaired the state's Lesbian, Gay, Bisexual and Transgender Legislative Caucus.
* Rep. Juan Vargas: Vargas replaced Filner in Congress. In 1996, he lost to Filner by 10 points.
* Former city councilman Carl DeMaio: Filner defeated DeMaio in a competitive 2012 race, winning by three points. DeMaio, who is openly gay, is challenging Rep. Scott Peters (D), who is one of the Republicans' top targets in 2014. If DeMaio decides to run for mayor again, it would be a blow to the NRCC, which would have to recruit another capable contender. As far as the mayor's race goes, DeMaio would be a candidate to watch because voters are familiar with him from 2012.
* City Attorney Jan Goldsmith: Goldsmith has experience in the city's top job on a smaller scale: He was once the mayor of Poway, Calif.
* City Councilman Kevin Faulconer: Faulconer was first elected in 2006 and is serving out his last four-year term.