I never got that Bill was "playing" a lefty. I always knew he was only playing along with Greg's jokes about being homeless, or smelling bad, or being a hermaphrodite; but that when he started on the lib talking points I assumed that was really him.
I did not say Bill is not a Democrat. I said he was playing a role on the show. But he was first and foremost a comedian. He frequently mocked the president, Harry Reid, Nancy Pelosi, OWS, and any other leftist cause you can think of. That being said, of course he was the liberal. And the show needs to replace him with another one. Greg could say things to him he could not say to liberal guests without the conversation becoming antagonistic. Bill could do the same with Greg. The quality of the show has suffered without him and will continue to do so.