Mark Halperin is editor-at-large and senior political analyst for Time magazine. He's a former political director for ABC News. Mark is the author of Game Change: Obama and the Clintons, McCain and Palin, and the Race of a Lifetime (Jan 2010), The Undecided Voter's Guide to the Next President (Oct 2007) and of The Way to Win: Taking the White House in 2008. Mark lives in Manhattan.