This is simply hypocritcal. If Liberman had been a Republican turned Independent, and he was campaigning for Democrats, Democrats would be praising him, while many Republican's would critique him. I hope none of you ever complain that a candidate is too partisan, because that is exactly what you all want.
Joe Lieberman is an attention whore. He's not doing this because of some sort of "bipartisanship". He's doing it because he needs attention. He can't just be a failed candidate for President. He has to constantly have the media on him.
He's as bad as Zell Miller.