Yes it can, that's what I was on about with the whole "sealed" ballot thing but didn't feel like harping with the details. Once you fill out your ballot you encrypt it with your state election official's election specific public key and the attach it to the email—the digital "put it in the inner envelope." Poll worker confirms eligibility and puts just the encrypted ballot in the drop box. At this point in the process they couldn't look at the vote even if they wanted to. Then when it's time for counting they decrypt each one and count it.
Again is it practical or accessible to your grandma? No but it's exactly the same as mail in voting.
[–] theluketaylor 3 days ago
[–] Spivak 2 days ago
The point of this exercise isn't to say we actually do email in voting but to demonstrate that you can absolutely build a system that's exactly as understandable and trustworthy as the mail in ballot system but digital because it is the mail in ballot system just s/USPS/a series of tubes.
[–] theluketaylor 2 days ago
Even a fully trustworthy poll worker executing an email workflow can’t be fully observed. The code they are running can betray the vote.
XKCD 2030 remains fully accurate. Electric voting: run away.
[–] Spivak 2 days ago
[–] theluketaylor 1 day ago
If you can tie people to their vote you can intimidate them or purchase votes, both very bad outcomes for a democratic process. A secret ballot is a core element of a strong, stable democracy. That's a rare attribute to value to the same extent, so no technology platform has really been built with that in mind. There is plenty of active research underway to make it possible, but as it stands old fashioned paper ballots, whether done in person or by mail, have some unbeatable properties.
Moving mail ballots to email is not currently possible or even very viable.