Not one to be left out of all the buzz surrounding the upcoming US presidential election, Amazon has unveiled its Election Heat Map which it will be updating each day to show the best-selling political books by state. The map is separated into blue (liberal) and red (conservative) categories, and it lets you click on any given state to see how each party is faring in the book stakes – for example you’ll see in the picture to the left that 44% of the US are buying liberal-themed books, compared to 56% for conservatives. Read the full story at The Next Web.