[habinero]

And that's completely fine, because each mail-in ballot is associated with one voter, and the system is designed to make fraud very obvious and difficult to scale.

If thousands of people were told "you already voted" when they showed up, then that would be very very obvious.

They also really do look at signatures and contact voters to cure ballots if they're unsure.

[somenameforme]

Mail-in ballots tend to be counted (and received) after in person ballots, so you don't need to worry about in-person conflict. If we go the other direction (mail-in ballot rejected because the person had already voted), it was indeed in the tens of thousands. In 2024 about 584k ballots were rejected. [1] 11% of those, more than 64k, were because the person had already voted.

[1] - https://ballotpedia.org/Election_results,_2024:_Analysis_of_...

[godelski]

Not to mention that you can catch double voting across state lines. It's not common that people do this but it does happen and people are really looking for it.

Hell, the fact that so many people have been looking for massive voter fraud for about a decade now and haven't is pretty telling. People aren't good at keeping secrets and if it's being done at scale it would be uncovered or leaked. Accidents and stupid people happen, but that works both ways