SAN DIEGO (AP) — The city's burgeoning Latino population helped propel a native son and child of Mexican immigrants into a mayoral runoff against a fellow city councilman to replace the disgraced Bob Filner, who resigned amid sexual harassment allegations. David Alvarez, a first-term Democratic councilman, began the short campaign with far less name recognition than some rivals but defeated them with heavy financial backing from organized labor and support in Hispanic communities. He'll face Councilman Kevin Faulconer, who easily topped a field of 11 candidates Tuesday with 43.6 of the votes but fell well short of the majority needed to avoid a runoff.