Threads like this are started with one intention. To act as cover when the RNC pulls out all the stops on election day with regard to their well oiled voter suppression scheme. They will have their operatives with their blackberry's at all the polling stations in the poor areas in the battleground states. They will challenge every voter that their multi-million dollar voter caging operation has put on their lists.
They will do this under the false guise that they must stop alleged voter fraud (which is a myth). As a result, they will shatter the record they set in 2004 for voters having to vote via provisional ballot. In 2004, over three million voters that went to the polls weren't allowed to vote unconditionally and had to vote via provisional ballot. Over 1 million of those weren't added to the count. Almost all of these were in poor and minority precincts. I predict in 2008, the number of provisional ballots handed out will be over 5 million and perhaps closer to 8 million. Those provisional ballots may or may not eventually be counted (some will and some won't). On election night, these provisional ballots won't be in the official numbers and the partisan zealots will be trying to fool the public that there's nothing amiss.
Hopefully the exit polls will have data regarding challenges and provisional ballots. That's something they didn't do in 2004.