FILE - In this Oct. 13, 2010 file photo, then-DC City Council chairman and Democratic Mayoral candidate Vincent Gray, right, and then-Washington Mayor Adrian Fenty participate in a Washington news conference. Halfway through what has so far been a scandal-stained first term as Washington s mayor, Vincent Gray can t seem to escape the shadow of the predecessor he defeated by a hefty margin two years ago. Gray s performance in office has been steady but not splashy. And his winning campaign is the subject of a federal investigation that leaves his political future uncertain. So far, three former aides have pleaded guilty to felonies.