Update: Bernstein weighs in with more thoughts in this vein: “Guesses about their true policy preferences (or lack thereof) is speculative too, but in my opinion basically irrelevant. Obama, Clinton, Edwards, Bill Richardson or Joe Biden, no candidate was going to win the 2008 nomination without making health care reform a top priority and acting accordingly in 2009.”

Greg Marx is a CJR staff writer. Follow him on Twitter @gregamarx.