Amazon Election Heat Map 2012

Amazon.com has published a map of the United States that tracks, state-by-state, the percentage of conservative political books purchased on the site versus the number of liberal books.

Overall, 56% of all political books are "red," (and not commie red -- the other kind), and only six states -- Maryland, Massachusetts, Minnesota, New York, Rhode Island, and Vermont -- plus the District of Columbia either break even or tilt blue.

Check out the graphic, along with a list of the most popular political books (including Bill O'Reilly's Killing Lincoln and Howard Zinn's A People's History of the United States, both of which were finalists in our "bad history books" poll) by clicking here or on the link above.