Mayoral candidates Kevin Faulconer and David Alvarez are each predicting a win Tuesday night.
The councilmen, who both began campaigning early Monday, each told 10News they are confident they'll be elected.
Faulconer, who has served on the City Council since 2006, said "people have believed" in his campaign "since the beginning."
Faulconer garnered 42 percent of the votes in November 2013 while Alvarez gained 27 percent of the votes. Despite this, the latest 10News/U-T San Diego poll shows Alvarez trailing by just 1 percent.
Alvarez—who's also confident he'll be San Diego's next mayor and has served on the City Council since 2010—said the surge in the polls is reflective of him being "out in every community."
The next mayor will replace Bob Filner, who resigned last year, amid allegations of sexual harassment. Councilman Todd Gloria has been serving as interim mayor since then.