Technically speaking, fivethirtyeight.com doesn't show the actual lead a candidate has, but their chances of winning that state, based on various statistical mumbo-jumbo. A 10-point lead probably translates into something like a 90% of the state going to that candidate, so the two concepts aren't that far apart.
http://www.electoral-vote.com/ is a good site for seeing what the actual lead is right now, based on current polls, rather than extrapolating which way a state is moving.
Actually, FiveThirtyEight has the polls they're using way down on the right side, but Electoral-Vote does a better job of presenting the straight averages in a graphical format, though I wish they had a better way to get to the individual polls and their crosstabs.
RealClearPolitics has a pretty good averaging as well, though some questions have been made and responded to over their choosing process for including and excluding polls from their averages. That said, I remember a week and a half ago looking at the battlegrounds breakout on their front page and seeing that the seven states were split pretty evenly, which is no longer the case. McCain has a single path to victory, and right now things don't look that good for him. The economy doesn't seem like it'll fix itself in the next few weeks, even after the Fed started buying commercial paper, and Obama's and the Democrats always poll better on the economy. Even if things stabilize, McCain's being dragged down by Palin (though less than before the VP debate), and Obama comes out looking like a better leader in the two debates. Plus his ground game has gotten better but still can't match Obama's.
It's not over, but McCain needs some sort of catastrophic event to get close. There are two polls in Virginia,
Virginia, that show Obama with a double digit lead.
