Mark Halperin is editor-at-large and senior political analyst for Time magazine. He's a former political director for ABC News. He is the author of The Undecided Voter's Guide to the Next President, The Way to Win: Taking 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.
John Heilemann is the national political correspondent and columnist for New York magazine. He is a former staff writer for the New Yorker, the Economist, and Wired. He is the author of Pride Before the Fall: The Trials of Bill Gates and the End of the Microsoft Era, Game Change: Obama and the Clintons, McCain and Palin, and the Race of a Lifetime and Double Down: Game Change 2012.