Obama and the Progressives

I'm just wondering if Senator Obama is pursuing a calculated strategy of saying things that get pundits on the left pissed at him. It probably won't help him win the nomination, but when and if he does win, it could help in the general election, and it could help even more in the process of governing. What better way, for example, to get the 8 or so Republican votes he will need to close debate on his health care plan in the Senate than by saying, "Paul Krugman hated this idea."