I am a kind of data junkie. I follow lots of polls and watch (or follow on the net) election night coverage for quite a few countries. I used to stay up all night to watch election results trickle in during the elections in Pakistan in 1988, 1990, 1993 and 1997. I watched all the coverage of the 2000 Presidential election and looked at vote counting results and exit polls wherever I could find them.
That is why I have collected together quite a few websites which collect state-by-state polls and/or make electoral vote predictions in the sidebar on the right on the main page.
If I have missed any, please let me know. I am looking for the state-by-state data rather than the popular vote.