Barack Obama and George Bush are two very different leaders with 128 counties in common.
George W. Bush carried these counties in 2000 and 2004. In 2008 and 2012, Barack Obama carried them.
In these swing counties, population changes have upset norms.
Opinions change as well, making these counties pivotal in 2016.
Bush-Obama counties together form a “purple” nation within the greater nation of America.