How about a machine voting system with paper fallback. You as a voter can review the paper protocol from your vote. If there is distrust, the justice system can review the paper trail as well.

Unless pseudonymized...

Regular ballot voting can also be hacked and on a scale. Making ballots invalid while counting them, or modifying them in some form or other, intentionally writing wrong values in the counting protocols...

And of course controlled vote or paid vote...

E-voting can and has also led to exposing voting fraud -- see Venezuella.

The ballot voting process is also misunderstood by regular citizens, even nerdy ones. From experience, even by voting officials.

> At some point, you have to give someone access to a database and they can change that database.

It's the only problem in existence that can be solved by the blockchain...