How Large Is the Divide Between Red and Blue America?

1992, 1996, 2000, 2004, 2006, 2008, 2008 Presidential Campaign, 2012, 2016

via The New York Times

As of 2012, the divide was pretty wide. Half of all voters were living in a county that President Obama or Mitt Romney, the Republican nominee that year, won in a landslide, which is defined here as a county won by 20 percentage points or more.

The proportion of voters living in landslide counties has steadily increased since 1992, a trend that reflects the growing tendency of like-minded people to live near one another, according to Bill Bishop, a co-author of “The Big Sort,” a 2008 book that identified this phenomenon.

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