Florida Mayor Julian Castro will give the keynote address . Possible 2016 contenders , many of them governors , will be on display . Can Democrats break serve , or will the presidential race go to a tiebreaker in November ? Former San Antonio Gov . Bill Clinton takes his shot at the Barack Obama . Anticipation is high for former President Bill Clinton 's Wednesday night address .
Florida Mayor Julian Castro will give the keynote address . Possible 2016 contenders , many of them governors , will be on display . Former San Antonio Gov . Bill Clinton takes his shot at the Barack Obama . Anticipation is high for former President Bill Clinton 's Wednesday night address .