The 2015 Philadelphia mayoral election was held on November 3, 2015, to elect the Mayor of Philadelphia, Pennsylvania, concurrently with various other state and local elections. Heavily favored Democratic party candidate Jim Kenney won. Incumbent Democratic party Mayor Michael Nutter could not run for re-election to a third consecutive term due to term limits in the city's home rule charter. Registered Democrats hold a formidable 7-to-1 ratio over registered Republicans in Philadelphia, giving Democratic candidates a distinct advantage in citywide elections.