By now, everyone is familiar with those post-election maps of the United States, showing most of the nation a bright red, solidly Republican, speckled with some small blue dots, where Democrats dwell. It looks like an overwhelmingly Republican country, but Democrats dominate, as they did last week, because the blue dots are cities, where people live. The red vastnesses are more rural, with fewer voters and more empty space.
But there are some exceptions, splotches of blue in rural, less-populated areas, Democratic outposts where you wouldn't expect them, Obama bastions unexplained by cities or university towns. Some of these are in New England, naturally, but also a patch in northern Montana, a swath along the Mississippi River between Mississippi and Arkansas, a Democratic stronghold in the iron range north of Duluth, where Minnesota juts out over Lake Superior.
And then there's one true curiosity -- a cluster of mostly rural counties and small towns in southeastern Minnesota, northeastern Iowa, southwestern Wisconsin and northwestern Illinois. This also happens to fit exactly with a region called the Driftless Area, a four-state region around the Mississippi River. It's called the Driftless Area because the glaciers that flattened most of the rest of the Midwest gave it a pass, leaving a lovely hilly area carved by rivers, home to small farms and little towns.
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