The Senate held a dramatic vote just to begin debate on Harry Reid's health care bill, and already there's more than enough drama, controversy, grandstanding, egos and filibuster threats to go around. Is it possible to come out of the Senate with a more progressive bill than the House passed? Joining us are Maggie Mahar, editor of Healthbeatblog.org, John Nichols of The Nation, Jonathan Cohn, senior editor at The New Republic and Olga Pierce, lead health care reporter at ProPublica.