San Diego city councilmen Kevin Faulconer (L) and David Alvarez are vying to become the city's next mayor.
On Tuesday, San Diego elects a new mayor to replace Democrat Bob Filner, who resigned after a sexual harassment scandal last summer. Republicans are keen to retake the seat -- but labor unions have spent heavily to avoid that. The winner between Republican Kevin Faulconer and Democrat David Alvarez may depend on how many Latino voters turn out at the polls. Reporter: Sandhya Dirks