In general, I like this idea. It is a good way of showing political differences within individual states, particularly TX, PA, OH, and MI.
I dislike the names of their regions: the choice of the name Appalachia to include the Atlanta Suburbs, the Mississippi part of the Mississippi delta and lots of low ground... whilst omitting Pittsburgh is historically, geographically, economically and politically stupid(what has Logan county WV got in common with Cobb county GA anyway???)
Yes, I couldn't figure out Appalachia either. They included the northern halves of Miss. and Ala., which I would have considered Deep South rather than Appalachian.