Purple America 2012 3D
MIT Technology Review
this week highlights Robert Vanderbeis 3D Purple America map, a nuanced visualization of the 2012 presidential election showing the proportion of people who voted Democrat or Republican, county by county, as a gradient between blue and red. The height of the horizontal bars indicates how many voters are in each county.

Vanderbei’s Purple America website also features an animated gif showing the evolution of the nation’s electoral complexion from 1960 to 2008.

Vanderbei, a professor of operations research and financial engineering, built his first Purple America map after the 2000 presidential election.

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