I recommend Chait who recommends Cohn:
Democrats from both ideological sides ought to consider whether voting against it now really spares them political blow-back. All of them have already voted for a health care bill. And that means they can expect one of the following two advertisements this fall:
Candidate X is an out-of-touch liberal who voted for the horrible health care reform bill that passed.
Candidate X is an out-of-touch liberal who voted for the horrible health care reform bill that almost passed.
It seems to me the two ads would be equally effective, unless Democrats can counter it by touting the benefits of reform--by reminding voters that, in the future, they won’t have to worry that insurance will run out when they get sick, that they’ll be able to have a binding appeal when insurers deny coverage, that they’ll be guaranteed emergency room coverage without prior approval, that they’ll be able to change jobs worrying about losing insurance, and so on.
But the only way to make that argument is to pass health care reform. No matter what happens on Tuesday.