Via Ben Smith and Bob Barnett, the debate format:

The debate, he said, will be split into nine nine-minute segments. The first four minutes of each will be taken up with a question to each of the candidates; the remaining five minutes will take different forms, up to the moderator, Jim Lehrer’s discretion, and one of those options is to let the candidates address one another and interact on the subject in question.

–A. Serwer

Adam Serwer is a writing fellow at The American Prospect and a graduate of the Columbia University Graduate School of Journalism. He also blogs at Jack and Jill Politics and has written for The Village Voice, The Washington Post, The Root, and the Daily News. Follow @adamserwer