You do not even know that and are writing about it? They send a letter to eligible previous mail-in voters and ask them if they want to vote mail in this year. If they send the info back saying yes, they will be sent a ballot. When you vote mail in. you have to sign and date it. The first act is checking the signature . If that fails, it is tossed. But the mail-in ballot are only sent to eligible voters who have requested one.
The ballot is sent to the precinct where the voter is assigned. Every voter is assigned a precinct and his name put in the precinct log book.
I could go on, but you are a righty and if the facts go against your vulpine preconceptions, you scream and call them lies.