Unclassed choropleth maps

 http://candacesmaps.blogspot.com/2010/12/unclassed-choropleth-maps.html

This map is one of the most interesting maps I have come across. Its interesting due to the fact that all the talk about the 2012 presidential election has passed. In this map you can see the percent of democrats given by the blue and republicans given by the red and how their colors have blended into a purple like color due to a blended mixture of the two parties.