Wow! You have got to be kidding! (Not that I could doubt it.)
My friend told me that she sends hers by mail but with a proof of delivery to show that it was mailed and delivered. I guess that is one way.
I think for primary elections they put the party registration on the outside of the envelope, but not for the general election, so there is no way for someone to tell from looking at the outside of the envelope whether the voter is registered R or D.
But that said, the post office is not as reliable as they would like us to think, so in places where there are ways to get the ballots straight to the polls, and people can do that, good.
But don’t use that as an excuse to avoid voting.
Voting by mail actually is pretty reliable.
Just be sure to VOTE! And Vote Trump!
I have been anxiously waiting for the post office to throw away some of my bills. But the post office never fails to deliver my bills on time and they never lose it.
On the other hand many times, some important stuff addressed to me has been delivered in my neighbors mail box, and only reason I know that because the neighbors were nice enough to ring my bell and hand it to me.