There were 39 Dems in the House who voted against the health care bill, which passed 220-215.
It is very easy to vote "against" something when you know it will pass by other means. Why do you think "pro life" Democrats like Stupak are caving like they will support this bill? People like him WANT it to pass, but they want to put up a "conservative" facade (that sadly many people at this site bought into) for the voters, but when push comes to shove, they will be good little loyal socialists in the end.
Call my cynical, but this is just how DC has always "worked."