You typed what I was thinking. I onced worked with a woman that had 3 or 4 different aliases, with identification for 3 of them. Since she was ‘Amish’, I am quite sure she voted with all of them.
Reminds me of a Hispanic gal I interviewed in 2006 that had 4 different aliases and was receiving government checks and benefits under all of the aliases. She denied it but she didn't know I copies of every one of her driver licenses with her photo on it.