Incumbent Mayor Nancy Vaughan narrowly defeated challenger Justin Outling in Greensboro’s mayoral election Tuesday. Vaughan won with an edge of about 400 votes out of more than 32,000 cast, according to complete but unofficial results. The tally does not include absentee or provisional ballots. Vaughan was first elected mayor in 2013 and previously served as an at-large member of the City Council. Outling served as a councilmember representing District 3 before making the run for mayor.