That's my thought as well, BD. If Edwards can just hang in there, he'll be the only rich, white guy in the running come convention time. At which point, the Powers That Be in the Dem party will ensure he's nominated. (This assumes no darkhorse late-entry like Gore or the skeleton of JFK.
For the Republicans, my instinct is that Giuliani will win, only because he's the most likeable of the possibilities. And the Republican part has shown that it's not above seeing an incompetent boob get the nomination, if he's got an iota of charisma.