i don't think it can as the ballots have been separated from the identifying envelopes. in which case the vote is considered invalid/void and the state senate/assembly decides on how many electors to send to the senate. then the federal senate decides to accept them or not, if they don't and there is not enough electors to decide on a winner, the federal level House and Senate vote (one vote each) for president (senate) and Vice President (house). this is known as a Indecisive Election, which is covered by the U.S. Constitution, Article II, section 1, clause 3