@Setanta,
That is kind of interesting, Set. The subject of early/absentee voting came up a few pages or more on this or another thread a few days ago. I fired off a query to NPR asking when those votes would actually be included in the count. Amazingly, I got a response today indicating that, in general, those votes would go to the appropriate precincts and be included in the totals.
But your observation was about exit polls. Some 20 million folks voted in the U.S. without going to the voting places today. I would regard exit polls with some suspicion.