In order to access those files you would need to unplug the machines that we use and remove the processing device, plug that into another machine, change the configuration while keeping the data files, then put it back in, reseal it with a seal exactly of the same type and number of the seal originally on it. Then get away all without being seen by the poll workers (from both parties and some third parties) all standing within three feet of you.
It is more than unlikely. If somebody could do this, they could gain access to the box and change the ballots in a system with manual ballots/counting.
they would also be familiar with the terms "expeliarmus" and "wingardia leviosum", have invisibility cloaks, and sometimes they would use cauldrons in their schoolwork.
Absentee ballots cannot be returned or exchanged at the polling station. If you choose to get absentee, but do not wish to vote absentee you must return to the county clerks office where they can issue a new ballot while scrapping the other, after checking that you were the person the ballot was assigned to originally. The ballots come with little tags that are removed upon counting that we record and use to verify that the amount of votes received match the amount of ballots given out. Ballots cannot be removed from the polling sites.
Chain voting would also be nearly impossible because of those rules, and because we are well-trained judges.
One could "Chain-vote" with a manually counted paper ballot the same way if such rules were not in place. The idea that the optical scanner ballots would magically be more susceptible to "threats" is preposterous.