The NYTimes has an incredible interactive tool that graphically shows the paths to victory as you enter election results into the tool. To start with, Obama has 431 paths to victory while Romney has 76 paths. But as you select the winner/loser in each election, you see the remaining paths dwindle until a winner is certain.
I’ll be using this live while watching election results. I had put my own post together along these sames lines here, though it did not benefit from this high-graphics, interactive approach that the NYTimes has put together. Very cool!