1. The way in-person voting works where I live, no. Mail-in ballots naturally require trust that the inner envelope will not be correlated with the outer envel

1. The way in-person voting works where I live, no. Mail-in ballots naturally require trust that the inner envelope will not be correlated with the outer envelope. 2. It's not, aside from that it is more easily automated. "Helping" certain voters fill out their mail-in ballots is already an easy way to manipulate an election.