It looks like Dean's momentum is continuing. In my opinion, if anti-Dean camp has a slight chance to stop him, several major candidates should drop out before the primary. If primary gets started, It's absolutely too late.
Lieberman is said to hold a news conference soon, will he drop another bombshell? Considering he's such a 'principled' politician, It's likely he will drop out before the primary if the party elders think that's in the best interest of democratic party.
My prediction: Lieberman will drop out before primary. I don't think other candidate will do the same since they're totally blindsided by their egos.