I think the fivethirtyeight.com website is interesting. They took the states where polls indicate it was safe for one side or the other (a 10 point lead in the polls), these are the states that are called early for one of the two candidates. Between the states that have been called that were leaning, such as PA and the states considered safe, they now show:
Obama 259
McCain 118
It would appear that Obama just needs 11 more electoral votes from a state that is leaning or a toss-up and the election will be over.