ArizonaAnon here. I have two anecdotal ballot stories.
A month before the election, my mom received two mail in ballots for the previous residents of her house. She has lived in the same place for 10 years, never received those ballots before. She thought it was weird and called the County Recorder's office to report.
Today I learned that a friend, her family, and several other friends of theirs who dropped their mail-in ballots at the polling place on election day had their ballots thrown out for signatures not matching. They were contacted by a political volunteer and have theirs counted now, but they are really angry that this seems to be a widespread pattern.
Serious fuckery here in AZ.