I was surprised to see this exactly match the New York Times real-time coverage. Then I noticed that the intrade map is updated every minute. So I guess the match is expected if people are still buying shares. I've never used intrade so I'm not entirely clear on its mechanics.

So far it looks pretty accurate.

Because trading continues as more info comes on, it will trend towards perfectly accurate. (It'd be nice to be able to view the map at previous snapshot moments.)