Thanks, I took a look. The FairVote.org site says ranked choice is the same as instant runoff. I was trying to figure out why you would ever rank choices if the purpose was not an instant runoff. Maybe that would relate to votes for multiple positions, like a board.
It seems important to have a None of the Above option, but it could be satisfied by having voters leave all options blank, or rank zero. I think Garrett Connelly’s example would work for me if I could rank the two candidates I find remotely acceptable, and leave blank or rank zero the other two, then if those are the only two left after the first two rounds of instant runoffs, my blank or zero would count as None of the Above, which still could potentially win.
I have a tiny bit of background in computer science and statistics, and I think I might be good at explaining this to other people if I understood it really well. The simplest version of ranked choice is so intuitive I thought of it myself before I knew others had thought of it first. Now I’m finding the topic has evolved a whole set of jargon of its own, and my state’s Green Party has developed factions over distinctions I don’t understand.