I'm serving as a poll worker in SF today. There's a section in our manual (page 65, there's a PDF online somewhere) about what to do if a voter is not wearing a facial covering, the TLDR of which is to politely offer them a mask or curbside voting, and then let them vote regardless. We are a long way off from requiring vaccination.

Someone might have already tried to implement this un-ironically — only a matter of when probably.

That SCOTUS case would be quite interesting to watch.

I would be interested in seeing if NYC will require the same proof of identity for voting that they do for their vax pass.