I would say that Edwards is probably the best choice. Not because of his Southern appeal or ability to carry an particular states, but because he really does bring a whole, powerful new persona and new issues to the campaign. The only problem is he is more likeable and a stronger candidate in nearly every way than Kerry. So Kerry would have to be careful Edwards does not overnalnce the ticket, making it bottom heavy.
(Finds it extremely difficult to pay attention to anything M is saying due to his new signature...)
Dang.