All right, I'll go on record too.
I'm a Dean supporter but I'm in a bad mood so this is a bit pessimistic.
Dean proves not to be the juggernaut everyone thought in Iowa, and comes in a close second or third in Iowa, bunched up near the top. Edwards performs extremely well, close to 20%.
Everyone competes in New Hampshire, which is bad for Clark and Gephardt. Kerry's Iowa resurgence proves not to matter as every major candidate places higher than him. Dean still wins, but not by much, and there's talk of him being weakened. Clark is second, but as part of a pack so he doesn't get much attention from it. Edwards again performs "better than expected". Gephardt's performance is disappointing and there's too many other candidates. Kerry drops out, Gephardt is fading, Lieberman's in denial.
Edwards is anointed as having the momentum, and his campaign experience starts to compare well against Clark. Another debate is held in time for the South, with Edwards and Clark being scrutinized. Edwards kicks butt. The bandwagoners in Dean's campaign start to jump ship and come to Edwards, seeking an outlet to their idealism, many suggesting a coalition. A few more states happen, Gephardt drops out, endorses Edwards, Lieberman finally drops out.
The blood gets worse between Edwards and Clark, while Dean hangs around. The media pounds Dean as he attacks Edwards and Clark, and Edwards manages to appear above the fray with Clark as Clark's attacks against Edwards don't seem to do any damage.
In the end pragmatism wins out, and Edwards and Dean accept that their visions and styles are compatible. Dean signs on as Edwards' VP. Throughout the general campaign, hints are dropped of Clark being SecDef.
Edwards/Dean beats Bush/Cheney convincingly.