He kept tabs on everything, so that there was no cheating as long as he could "hold it in," but being human, he was forced to leave the room for a few minutes, and in that time, the pile of over fifty envelopes, which had been sitting on the table were suddenly gone, stuffed in the ballot box. It was obvious that they used his human weakness to mark off voters who wouldn't be showing up and taking the same number of envelopes and quickly put their "favorite" ballot inside.
When the polls closed, he immediately reported it to the proper authorities and waited to be called to testify. Even though the media claimed that there had been investigations which were found to be "baseless," he was never called by the police.
I wish I had heard the story then. Now it's too late to do anything but it jives with the stories I remember hearing from a number of sources in the past.