Ya, but some of the more GOP metro areas are trending Dem a bit, although the amazing thing, is how stable most metro areas are, over time. Bush of course really tanked in the NYC, Chicago and Philly metro areas, and to a lessor extent in LA, but that was all. Fast growing GOP metro areas that are trending Dem include Phoenix, and Dallas and even Atlanta, along with Columbus. The Twin Cities (slightly Dem) are swinging the other way to slightly GOP (which makes it near unique). By the way, I bet the GOP Charlotte metro area is trending Dem too. You are just not going to make a case of GOP hegemony out of this. To do that, to the extent one can, you need to milk the robust smaller towns, where techies hang out behind their monitors and such.
Do you have any data on a spreadsheet somewhere as to how the Charlotte metro area is trending?