The problem the dems have is if someone wanted to teach the GOP a lesson, look what would replace it.
I agree. But there comes some point at which you've crossed the line of acceptability. How far are you willing to let Republicans go?
We don't hve to have purity, but we should have some indication that they are after the same goals that we are. With some, at least, there is nothing to show that. (Chafee is a good example.)