
Also, Andrew Gelman reminds us that generally speaking, politicians have a lot of leeway in how they vote. His research suggests that the benefits to moderation for a member of the House are probably about 2% in the general election.
And some members do seem prepared to vote their conscious without concern for public opinion. Sen. Joe Lieberman (I-CT) said, "I don't think about that stuff. I'm just -- I'm being a legislator. After what I went through in 2006, there's nothing much more that anybody [who] disagrees with me can try to do." And Michael Bennet (D-CO) seems prepared to vote for reform even if it will cost him his position.