Which is basically about states that let you vote early. Like western states with very inclusive absentee ballot rules.
http://www.fivethirtyeight.com/2008/10/mccains-mountain-of-problem.html
If you live out West, but your entire state (or, say, 60% of the previous cycle's voters) votes in the week leading up to the election, we might get a reverse early call: the results out West mean the vote Day-Of in Eastern states Does Not Count (much).
Not this time. This time, it's more a matter of the walls closing in on McCain.