As developed by Mark Newman, Department of
Physics and Center for the Study of Complex Systems, University of Michigan
Email: mejn@umich.edu
Updated: November 17, 2004
On election night 2004, and in the months since then, we have seen many maps that look like this:

We can do the same thing also with the county-level election results and the images are even more striking. Here is a map of US counties, again colored red and blue to indicate Republican and Democratic majorities respectively:
