It is fairly complicate. The actual ballot is (if I recall correctly) inside two different envelopes. If it is opening at random, he has damaged both candidates. Any opened prior to counting them are going to be considered invalid.
Exactly right. There is now way to tell. This guy is a liar.
Could be he’s destroying a lot more than just absentee ballots. Mail carriers are getting lazy. Throw the mail in the fireplace, heat the house for free as you kick back and watch tv the rest of the day. Who’s to know.