FUMR!
In short, Gruber is the most powerful voice (and the most dangerous one for the Romney campaign) for three fundamental points: 1) Romney championed the individual mandate, overriding concerns about personal freedom; 2) the plan today is pretty much the same as what Romney signed into law; and 3) without it in all likelihood we wouldn’t have ObamaCare today. That might sound like a reason for Democrats to vote for him, but in a Republican presidential primary all of that may be the death knell of the Romney candidacy.