Longtime Crikey contributor and poll cruncher Possum is sharing a wealth of knowledge on the US polls via his Pollytics blog.
Possum has a dedicated US election page which is updated daily with Intrade/Gallup Daily Tracker information. There is also a weekly update every Monday which includes charts looking at the projected Electoral College votes by state. This data is derived from the Intrade US political markets.
The latest post on Pollytics, The Obama Surge, offers up the weekly Intrade roundup for the US Election, looking at how the Electoral College vote and Democrat win probabilities have been playing out compared to the Gallup daily tracking poll.