2008 voting margins by county, with red-to-blue gradient

"http://www-personal.umich.edu/~mejn/election/2008 There is no way to tell whether a particular county went strongly for one candidate or the other, or whether it was relatively evenly split.

 

"One way to improve the map and reveal more nuance in the vote is to use not just two colors, red and blue, but to use red, blue, and shades of purple in between to indicate percentages of votes."

 

I did something similar, using the state margins, with this map.

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Uploaded on November 10, 2008