Challenger Justin Outling has conceded to incumbent Nancy Vaughan in the race for Greensboro mayor. Outling, a city councilman in District 3, had been trying to unseat Vaughan, who has been mayor since 2013, and he came close to doing just that. In complete but unofficial results from last week’s election, Outling trailed by just over 400 votes. But that was enough to be outside of the 1 percent threshold needed to call for a recount.