The south is not the sole conservative stronghold that the press makes it out to be. Look at the county map of red and blue from the last election and you find a lot more red in places other than the south.
The point was that it was the democrat south that seceded and it was the south that remained primarily democrat up through the 60s.
The thought should not be a segmented country but one country again united under a constitutional republic and with an outlawed democrat party.
that thought of a segmented nation is repugnant to me. However, looking at the county map to which you refer, note the democrat counties, by and large, are centered around the urban areas. The colors are not mixed throughout the country, but rather they are segmented - urban counties versus the remainder.