A reader writes:
Sure, there are all the obvious reasons. But I think what it comes down to is this. The one thing the GOP can't abide is being knocked out of its comfort zone. And they know HRC doesn't have a prayer down South. With the possible exception of Romney (Mormonism), any of the main GOP guys will effortlessly sweep the South vs her. And FLA will probably come fairly easily too. That basically leaves OH as everywhere else will likely stay about the same as in 2004 (though McCain could put a state like MI or PENN into play).
Throw Obama into the mix and that dynamic changes. He'd present them w/ some curveballs down South they'd probably rather not deal with. And with Edwards, it'd be similar.