Whoa. Word is Al Gore will endorse Howard Dean tomorrow. I must say, I’m quite surprised by this announcement, particularly given all the water Gephardt and Kerry carried for Al last election cycle (to say nothing of Joe Lieberman, of course.) I guess Gore has either decided the Dems need to rally around a candidate immediately, or he’s recently experienced what alcoholics refer to as a moment of clarity. Either way, it’s obviously now even harder to envision anyone else but Dean winning the nod, barring a nuclear gaffe by the good Doctor. Update: It’s official.