more people turned out to vote than were registered voters. And that alone would certainly raise a red flag. But the actual recorded votes are below the number of registered voters. And so, from what is there, there is no proof of fraud.
Based on what you said, though, I guess what's important is to know that the votes that are shown there reflect the final number. In other words, Boston has some explaining to do.
I agree that something needs to change before the next election. I say we go back to paper ballots ~ something TANGIBLE that can be re-counted manually.