We are still trying to figure out why there was report after report of Republican precincts having incredible turnout then in fact underperforming. I have a theory that involves the change they made a polling places by combining several precincts into one "location" (i.e., one table within a polling place, rather than three or four as we previously had.) This reduced the number of poll workers by 50% at least, and, I think, slowed down the process drastically (hence, long lines, hence the appearance of massive turnout) when in fact it was lower turnout being handled more slowly than ever.
Well the Ohio polls were off, to some extent. Many polls were showing Obama up 5 or 6 points - actual margin was 2.
Columbus Dispatch poll was most accurate.