One doesn't need to be that smart to do that.

1. In person voting day of.
2. Thumb in ink after voting.
3. Each counted vote has to correspond to a real person.

As long as we know the exact number of people voting from each precint the rest is simple math.

Or we assign addresses from a voter blockchain to each registered voter and they can vote using that. Publicly verifiable and anonymous.

Yeah bro, neuralink. All you have to do is think about your vote and it'll cast it for you