[free_at_jsl.com]

Who's to say who did it (or could do it)? Election workers have physical access to the machines. If the machines are in an environment near PEOPLE, then they are vulnerable.
Electronic voting is a solution in search of a problem. Paper ballots are far more reliable. If somebody wants to implement an electronic voting system, it should include paper input or at the very least, paper output so there is a permanent record of the transaction.

[muawiyah]

Paper ballots are subject to ballot stuffing and ballot substitution.

We already know how to defeat them, and it's very easy.