John Heilemann is the national political correspondent and columnist for "New York" magazine. An award-winning journalist and the author of "Pride Before the Fall: the Trials of Bill Gates and the End of the Microsoft Era," he is a former staff writer for "The New Yorker," "Wired," and "The Economist." He lives in Brooklyn, New York.

Mark Halperin is editor-at-large and senior political analyst for "Time" magazine. He is the author of "The Undecided Voter's Guide to the Next President" and the coauthor of "The Way to Win: Taking the White House in 2008." He has covered six presidential elections, including during his decade as the political director of ABC News. He lives in Manhattan, New York.