The 2015 Jacksonville mayoral election took place on March 24, 2015, to elect the Mayor of Jacksonville, Florida. The election is a blanket primary, with all candidates from all parties running together on the same ballot. As no candidate received a majority of the vote, a runoff was held between the top two vote-getters on May 19, 2015. Incumbent Democratic Mayor Alvin Brown ran for re-election to a second term in office. He was defeated by Republican Lenny Curry by a margin of 5,285 votes.