The polls are only "tightening" because the pollsters are tweaking their numbers closer to reality each day.
I doubt they'll admit to the true numbers, even on election day. They're as in the tank for Obama as the MSM (Marxist Socialist Media).
Pollsters already have their excuse for missing the outcome - RACISM. They are covered either way. I do think they will attempt to put the race within the margin of error by Monday.