Sure the machines are sitting in minimally secured voting places. And usually they are already plugged in and charging. But they cannot be turned on without breaking seals and loading the election by entering passwords. And even if someone went in and ran up one or many votes overnight, when poll workers arrived they would notice the seals were broken and public/protected counts would be off. And in our case, there would be paper ballots in the bins of the tabulator. All red flags that would be immediately investigated. We would see it in the logs and it would be painfully obvious.