Not everyone who wanted to vote by mail in the Commonwealth of Massachusetts in the September 2022 primary had his vote counted.
There were 480,255 ballots cast by mail, but 11,412 of those were received and rejected. The most common reason for rejected ballots was that they showed up late; 8,070 ballots were discarded because they didn't arrive before 8 p.m. on primary day, according to Politico.