Nash, you still don't get it. If you are interested in the Southern mind, read Faulkner.
For the debate, his tone will depend upon the tack Kerry takes.
With Ann Richards, for example, she stayed down home, since that really is her limit. She is a great lady, but she can not make the transition away from being a Good ol Boy. Bush can, and the worst thing Kerry could do would be to condescend to Bush. He will eat him alive with the "Brangs" and "Ya'lls" if he does, just because that is the natural reaction.
If, on the other hand, Kerry treats him with a modicum of respect, then Bush will speak as the Harvard MBA that he is. Not a conscious decision, just the way it is.