In 1976, only 27 percent of Americans lived in “landslide counties”—counties that voted either Democratic or Republican by a margin of 20 percent or more. But the number has risen steadily; in 2008, 48 percent of Americans lived in a landslide county.77 Our counties and towns are becoming increasingly segregated into “lifestyle enclaves,” in which ways of voting, eating, working, and worshipping are increasingly aligned.
