Even if he slips in the polls, they are failing to take a number of things into account. Number one, few polls actually track people who have cell phones. LOTS of kids out there of voting age who have only a cell phone. Number two, they are polling REGISTERED voters that they get from a list. They don't have some sort of secret database of all voters that is constantly updated, so they miss any voters that Obama gets added to the registers, a group that is pretty substantial in size.
The fact that each poll is different from those that predede it is another reason to look at them and shrug.
The best indicator of where McLame knows he stands is his incessant petty attacks. He wouldn't be discrediting his own image that way if he didn't see his campaign already spiraling down the drain.