I didn't really think Edwards situation in the race was dire at all until I read Edwards-supporter Petey's mournful diary entry.
So, it got me thinking whether John Edwards would leap in and endorse John Kerry or not and my bet is that he wouldn't. I think he'd hold off and endorse no one.
Kerry is unlikely to pick Edwards as a VP for the same reason that Dean IS likely to pick Edwards for VP nominee: Edwards makes an attractive addition to the ticket for Dean but would overshadow Kerry.
If Kerry is the nominee and loses, Edwards, like Al Gore, knows that the outsider/insurgent/reformer themes of the Dean campaign are the prize for 2008, especially if the Clintons really are waiting in the wings for 2008 and a Hillary run. Getting that Democratic base of people who want something from the government and joining it onto that insurgent message. Edwards has a very favorable image with Dean supporters and I see no advantage to Edwards in staking out an anti-Dean position, ever.