This is exactly why voter rolls need to be updated. There are likely millions of registered people who are either dead, illegally in the states, moved to another state or in a nursing home with alzheimers and just don't vote anymore. Many don't register even though they could and there is nothing stopping others from stepping in to register and vote for them. If people who work in the polls and are responsible for collecting registrations and sending out ballots are dishonest, they have a wealth of opportunity to commit fraud. I find it suspicious that Holder sued states to stop them from validating voters on their rolls and purging names of unqualified voters.
I think cheating is far too easy and the administration would like to keep it that way. No doubt they will be concerned if anyone other than they are cheating, but I have little faith in the current integrity of our voting process. Cheaters are difficult to catch and it's impossible to validate each vote after it comes in. That is especially true this year because Soros' is involved due to SCYTL stepping in to count votes. Once the vote is cast, there is no chain of custody or paper trail, so no way to determine whether a vote was legal or not.
The time to take action is prior to voting to ensure that cheating is kept to a minimum. And the penalty for those caught cheating should be severe.