FiveThirtyEight.com is political polling blog that reguarly crunches numbers based on multiple polls to provide predictive (is that even a word?) information on the Presidential (and perhaps other political) races.
The guy that started it was on Countdown with Keith Olberman last night.
This seems like a good source for this sort of data. But perhaps I am just saying that because the data provided if favoring the candidate that I happen to support, i.e. Obama.
I’m adding this one to my blogroll.