White flight

The most dramatic improvement I've ever seen in a marketing model came from adding an urban/suburban/rural variable. I wonder how that model is holding up given this:

In a reversal, America's suburbs are now more likely to be home to minorities, the poor and a rapidly growing older population as many younger, educated whites move to cities for jobs and shorter commutes.

An analysis of 2000-2008 census data by the Brookings Institution highlights the demographic "tipping points" seen in the past decade and the looming problems in the 100 largest metropolitan areas, which represent two-thirds of the U.S. population.

The findings could offer an important road map as political parties, including the tea party movement, seek to win support in suburban battlegrounds in the fall elections and beyond. In 2008, Barack Obama carried a substantial share of the suburbs, partly with the help of minorities and immigrants.