Print Continue to article content Comptroller Scott Stringer has been angling for the teachers union’s support throughout his mayoral campaign. | Richard Drew/AP Photo Teachers union backs Stringer in crucial nod for mayoral campaign underperforming in early polls. The nod from the United Federation of Teachers was more or less expected following the union’s final forum this month. Members told POLITICO it was between Stringer and former City Hall attorney Maya Wiley. But with the backing of the 200,000-member union as well as the endorsement of the Working Families Party last week, Team Stringer is getting a welcome boost as it heads into the final two months before the Democratic primary.