Kerry/Edwards will win because...

[JSJ]

...they will have the votes.

They won't win if:
1) The elections are called off or delayed
2) Voting machines are tampered with
3) Iraqi/Afhani resistance abates
4)...or a Bush-created villain is captured or killed

All four are real possibilities, although, of the three, the one least likely to occur would be 3. Yet, this most manipulative of administrations will do something before voters go to the polls to throw a wrench in the works- something deceitful and something awful. Yet, something.