How would we know? But ultimately it doesn’t matter. This is the first election with near universal mail-in ballots, so no prior election would have had the cov

How would we know? But ultimately it doesn’t matter. This is the first election with near universal mail-in ballots, so no prior election would have had the coverage necessary to make this data useful. Secondly, just because it hasn’t been done yet doesn’t mean it won’t happen in the future. The point is to proactively prevent possible election manipulation, not merely react to demonstrated problems.