A correlation: 19th century cotton production and Obama votes

The Strange Maps blog has the following interesting map mash-up. This is an overlay of two maps. One is the 2008 presidential election results and the other is cotton production in 1860 (each dot represents 2000 bales). Strange Maps writes: The link between these two maps is not causal, but correlational, and the correlation is…

Red and blue election maps

I thought I’d made my last election-related post for a few years, but here’s one more. This is the red and blue 2008 election map we have gotten used to seeing for the past week. Mark Newman, a pysicist at the University of Michigan made a collection interesting election maps using software called Cart. Cart…