Gore won't run in 2012, though it wouldn't surprise me if "Gore to win the 2012 Democratic nomination" is at about 10.0 on Intrade by December 2008, regardless of whether a Democrat wins next November. 
I understand that this is a joke, but I figured I'd point out that Intrade doesn't start up markets on incumbent party nominations in a situation where the incumbent is not term-limited. notice how all DemNom2008 contracts began on 11/04/04 while RepNom2008 contracts began on 10/31/04, because, of course, either Bush wins and he is term-limited or he loses, and it both cases the GOP field is wide-open.
