In the top ten on Digg’s “World & Business” section today is an item titled “Visual Validations of the 50 State Electoral Strategy” that links to a University of Michigan page with some fascinating cartograms. The digger and the author of the Michigan site make the point that each state is hardly of a red or blue state, but rather a mosaic of purples communities. We couldn’t agree more.
Digg links to cartograms of the 2004 presidential election, but I think the 2006 congressional elections page is more interesting. Here are some maps from that page, including a abridged version of the points that the author of the site is trying to make.
House of Representatives Electoral Map
The map is a sea of red, but we know that Democrats won the House. So take a look at the various population densities in each district.
If you combine the electoral map with the population density one, you get a cartograph. Each district is scaled to population, regardless of their actual area on the ground.
House Cartogram (Districts scaled by population)
In theory each district is supposed to have a roughly number of constituents. Here’s a cartograph where each district is scaled to an equal size.
House Cartogram (Districts are equal size)