If people can safely stand in line at supermarkets they can go vote. At any rate there needs to be an army of observers from both parties everywhere ballots are being handled. If a bunch are "discovered" outside of normal channels they need to be invalidated .There’s a reason "Trump is crying about mail in voting. He knows he’s going to lose so he’s making the fraud excuse. He’ll point to mail in ballots being democratic votes as a proof point that his idiot base will suck right up. The reality is he’s told his followers not to vote by mail so they won’t. No fraud, just more self harming behavior by Republican voters.