I think the progressive blogosphere and congresspeople are rejoicing in the defeat of an enemy
Yet that defeat is also a defeat of progressives. Fighting among ourselves will only make the defeat worse. One thing that wasn’t clear to any of us last August is just how bad a defeat for the Democrats would have been: it very likely would have put the radical right back in power. So I think standing on principle is both ill-mannered and poor tactics. Sure, we can blast the Congressional progressives for not keeping their promises. We might even be able to get some of them replaced. But would this strengthen our position? It would not. Long term, I think, conditions have rarely been better for major reforms and perhaps the formation of a new major party in the USA, and that is where we need to focus our efforts.