The best site I've seen so far for following / predicting the upcoming election is electoral-vote.com, with an interactive map and other features. They're obviously liberals hoping to sway the election, but they're more informative than propagandistic. Two other useful features of the site are a good essay on the electoral college and an ad-banner for tellanamericantovote.com, a good reminder-site for Americans overseas and those who know them.
I have to admit I've also been addicted to electoral-vote.com for weeks now. It has got so bad that its now one of my tabs in safari. It certainly looks like the winds of change are a blowing. It will be interesting to check back after the RNC is over.