Not to defend the pollsters, but if they didn't get the pre-election surveys right, why would the get the post-election surveys right?
(Actually, I guess that's not exactly a defense of the pollsters' abilities at all, is it? Hee hee.)
I'm also a total believer in the average person's inability to remember how they felt on an issue one week in the past compared to today, much less a month ago or more. Lots of people rationalize outcomes in their own minds after the fact.