Josh gives his take on our junior senator and I tend to agree.
What does seem clear to me is that Lieberman's days in the Democratic caucus, or more specifically, his days with a committee chairmanship courtesy of the Democratic caucus are numbered in months.
My assumption is that after the November election, regardless of the outcome of the presidential campaign, Joe will be stripped of his chairmanship. (This seems even more certain to me if Obama wins the general, but I suspect it will happen regardless.) Whether he'll actually be expelled from the caucus I don't know and probably doesn't really matter. Once he's stripped of the benefits he gains from it, presumably he'll leave himself and become an actual non-caucusing independent or, more likely, start caucusing with the Republicans.
What that tells me is that Lieberman has no incentive not to make the maximum amount of trouble over the next five months both for his senate colleagues and for Sen. Obama.
Why wait, strip him now and get it over with. I mean, after everything
Obama did for Joe back in '06, for Lieberman to be John McCain's number attack dog is disgraceful...not that I'm surprised.