I would imagine that within a couple of years it will be quite hard finding people who will admit to having voted for Bush, in places like Ohio.

That's what happened over here, towards the end of the Tory years - one of the questions they ask to try to get the balance right is "Whom did you vote for last time" - and by the answers they got, the Tory victory in the previous election clearly couldn't have happened.

It probably wasn't so much that people intentionally lied, but memory can be selective, and it's remarkably easy to forget mistakes.