Okay, thank you. I misremembered some of the details of that election. Ultimately, though, Boudin’s election was the product on ranked-choice, as only 45% of S.F. voters ranked him 1st, 2nd or 3rd. There’s a good explanation here:
https://www.city-journal.org/instant-runoff-voting
This shows to me people just don’t care about these elections as it makes absolutely no sense that 5,000 INFORMED voters would put the most pro-police candidate as their first choice and Boudin as their second.
They probably just filled it in randomly. I have heard some people do that - they mistakenly believe they can’t leave empty spots, vote for those they know about and then fill in the rest by chance.