He will caucus with the Dems because he is essentially a Dem. He has supported the president on the war, but other than that, he's very, very liberal. I appreciate his war stand, but he really doesn't belong in the Republican party.
I know Lieberman's a liberal, but didn't he used to hold a few conservative positions before he joined Gore on the ticket? He was pro-school vouchers, I'm pretty sure, and I think there were two or three other things -- maybe parental notification even if he is overall pro-abort.