...on the red/blue/purple-ness of the U.S.
I like this one the most, I think, as it keeps the states in their undistorted geographic locations while still showing their relative electoral importance and leanings. Good work.
(I'm presuming that everybody's already seen these earlier views.)
(via Rebecca's Pocket)
Update: Tom Tomorrow pulls together some interesting actual words about these cultural divides, for those looking for more analysis than visual representations...