The published exit polls are normalized to match the official tallies, so they are not generally valid for checking those tallies, those if micro discrepancies survive macro adjustment, that would be interesting. However, both Chris Matthews and Bill Maher have stated that the unaltered polls showed Obama strongly ahead. Deeply suspicious in itself, independent of other factors. Like I said in the other thread, if we could just get the media to release raw exit poll data by precinct, we could correlate with counting method ourselves. But I doubt we could do that outside of court, and whether it is possible in court is beyond my knowledge.