Most voting machines are connected to the Internet or to a machine that has been connected to the Internet in some point in the lifecycle of an election. But ev

Most voting machines are connected to the Internet or to a machine that has been connected to the Internet in some point in the lifecycle of an election. But even absent hacking, there are sometimes configuration errors (e.g., swapping candidates or contests) that don't get detected in pre-election testing, procedural or equipment failures that result in not scanning some ballots or scanning some more than once, etc.