David Von Drehle has a great column of the Red Sea of America.
".... This Red Sea does not appear on any map but one. Or let's say, it appears most clearly on one particular map. This map is marked with the boundaries of the 3,141 counties or county equivalents in the 50 United States. Counties where Kerry won more votes than President Bush are colored blue. The rest, the counties carried by Bush, are red. See?
Blue islands and blue archipelagos, a blue isthmus here, a blue peninsula there, rise in a Red Sea that stretches from coast to coast. Rise quite literally, in many cases, because blue country is often marked by skyscrapers and high-rise condos and state capitol domes and university clock towers. Red country, as we shall see, is often quite flat. In some parts of the country, red and blue are as closely intermingled as water and land in the Louisiana bayou.
Where we went, it was wide open sea. ..."