Primaries: It looks like John Kerry will come out a big winner tonight, with Edwards getting at least the consolation of winning his home state and possibly Oklahoma. Lieberman and Clark are done after tonight, even if the don't make it official. A lot of people are ready to call Dean out as well. If they were to drop, could Edwards pick up their supporters? That's really his only chance as Kerry continues to pick up delegates. If they, particluarly Dean, stay in the fight for a few more weeks, it's in the role of spoiler for Edwards.
Of course, Al sharpton and Dennis Kucinich are less interested in the nomination than they are in influencing the platform. They may campaign up till the bitter end, even if they're doing on public access tv.