In WA we have absentee ballots which is really the best of all worlds. You fill it in, sign it and mail it back. Couldn't be easier and you don't have to worry about polling locations. They are also hardcore about checking your signature; If it doesn't match your voter registration the ballot isn't counted and you get a letter in the mail.
The problem with this system is that it's possible to prove to someone else who you voted for.
Voting needs plausible deniability so you can't be coerced or bribed into voting for a particular candidate as was alleged to happen in the Balkans many times: https://en.wikipedia.org/wiki/Bulgarian_train
I've read accounts that many absentee ballots are invalidated by a very sketchy process of signature verification. And that was in Alameda County in CA, a very liberal place. It seems attacks on voting are coming from all sides.
