Incumbent Mayor Vince Gray at one time held a healthy lead in his re-election bid . A businessman 's plea bargain agreement over Gray 's the day campaign raised doubts . Challenger Vince Gray poll numbers surged while Muriel Bowser 's 's remained flat . Vince Gray ended up with a double-digit win over the two -term mayor .
Incumbent Mayor Vince Gray at one time held a healthy lead in his re-election bid . A businessman 's plea bargain agreement over Gray 's 2010 campaign raised doubts . Challenger Muriel Bowser 's poll numbers surged while Gray 's remained flat . Bowser ended up with a double-digit win over the one-term mayor .