Among those considering a run to succeed Filner in a special election is former City Councilman Carl DeMaio, who lost to Finer by around 2 percentage points in last November's runoff election. Since losing to Filner, DeMaio, a Republican, has been planning a campaign to oust Rep. Scott Peters, D-San Diego, next year.
A spokesman said DeMaio was conferring with supporters and community leaders who have asked him to run for mayor in a special election.
Two current council members, Council President Todd Gloria and Kevin Faulconer, also have said they are considering a run, although they are not prepared to announce ar decision.
At least two people have taken steps toward running in the special election.
The City Clerk's Office said that ex-Assemblyman Nathan Fletcher, now a Democrat, has filed a notice of intention to run in the race -- a necessary step before forming a campaign committee. Fletcher, an executive with San Diego- based Qualcomm, gained nearly 24 percent of the vote in the June 2012 primary but fell short of qualifying for the runoff.
Tobiah Pettus, a website owner, also filed the intent notice, according to the clerk's office.
Among familiar faces who will not be running are City Attorney Jan Goldsmith, one of Filner's biggest political rivals, and District Attorney Bonnie Dumanis, who finished a distant fourth in the primary election. Both said they will not run in the special election.
A third rumored candidate, state Assembly Majority Leader Toni Atkins (D- San Diego), also announced that she would not enter the race.
Now that Filner has resigned effective 5 p.m. Friday, a special election will be scheduled within 90 days. If a candidate receives more than 50 percent of the votes, that person will become mayor. Otherwise, a runoff election will be held between the top two vote-getters.
Filner agreed to resign after the City Council approved a deal with him that provides him with legal representation in a sexual harassment lawsuit filed by his former communications aide, Irene McCormack Jackson.
As part of that deal, the city will provide a joint legal defense with the mayor against claims against him by city employees or contractors, but the city reserves the right to seek reimbursement for any damages it suffers. Filner will also be permitted to hire his own lawyer, according to the city attorney.
Although he apologized, the 70-year-old former Democratic congressman blamed a ``lynch mob mentality'' for leading to his demise and insisted that he ``never sexually harassed anyone.''
Filner is also mired investigations into his alleged misuse of a city- issued credit card and shakedowns of developers.
He is the third mayor of San Diego in recent times to resign amid scandal, following Roger Hedgecock and Dick Murphy. Filner left Congress to become mayor less than nine months ago.