[wittrock]

A number of end-to-end verifiable voting systems have been proposed and fielded! See [0].

The key issue they try to solve is how to let you check your vote was counted without being able to prove who you voted for to anyone else, thus preventing coercion attacks.

Most of them rely on paper, but some [1], provide reasonable guarantees about online voting.

None of it involves blockchain.

[0]: https://en.wikipedia.org/wiki/Scantegrity [1]: https://heliosvoting.org/