...Provisional ballots, new this election, also prompted disaster fears because they could delay any recount efforts. Any voter whose name does not appear on precinct rolls is entitled to cast a provisional - or paper - ballot. But elections officials must individually certify them as being cast by registered voters before they can be counted.
"To a certain extent, provisional ballots are second-class votes," said Spencer Overton, a law professor at George Washington University. "You can cast a provisional ballot but we don't know if officials will count it."
Now that definitely makes me feel better!