Mark Halperin

Co-host of Showtime's The Circus, and Co-managing Editor at Bloomberg Politics; author of The Undecided Voter's Guide to the Next President; co-author of The Way to Win: Taking Back the White House in 2008, Game Change: Obama and The Clintons, McCain and Palin and the Race of a Lifetime, and Double Down: Game Change 2012; former Senior Political Analyst and Editor-at-Large for Time magazine; former Political News Director for ABC News (1997-2006)