Frum emphasizes the difference between looking at county-level inequality as compared to state-level inequality. He also makes the point that inequality (at the state and county level) is often associated with big cities. Interesting stuff.
Frum also mentions Missouri, which is one of the states where richer counties favor the Democrats. Richer counties also lean Democratic in Nebraska, and most of the western and northeastern states (see pages 68-70 of the book), but in Indiana, South Dakota, Wisconsin, New Jersey, and most of the South, it goes the other way, with richer counties being more Republican. (I showed this in the map of Texas in my previous blog entry.) The patterns really do look different in different parts of the country, and Missouri is not like Texas in this respect. In any case, I haven’t crunched the numbers on county-level inequality, and I agree with Frum that the patterns within a state can differ from those between states. Individually, richer Americans still lean Republican, but location matters a lot also.