For some reason noncitizens do get voting ballots! I bet the sender knows the status details to whom they are sending to. Btw, I always shredded mine before I got citizenship. Imagine if some people cast their ballots while not being citizens!!
In the past, individuals, particularly females, would go door-to-door, encouraging residents to vote for Democratic candidates. This included engaging with people who had registered as Republicans for the primaries.
The approach involved asking individuals if they identified as Democrats. If they responded "Yes," they were then guided to rejoin the line to vote in the Democratic primaries.
California automatically registers everybody when they get their DL. If the DL you're getting is not Real ID they have no fucking idea if you're here legally or not (they stopped checking about 10-15 years ago). So yeah, totally believable that the fucker got registered against his will. The twist here is they always send a postcard informing you of your voter registration and, of course, they send ballots and voter information packages. So he probably knew.
I thought this never happened!