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I didn’t tell you to trust Wikipedia, I told you to follow through to the linked sources in that section. Also, that talk page suffers from the same problem you’re having, which is assuming that the RCV results are the same thing as the public opinion. The entire point of analysing the data is to look past the voting system used and try to understand what people’s preferences are. Here’s another (very long) source that summarizes the full ballot data and explains that, yes, Palin was a spoiler. Justifying this as acceptable by saying that RCV followed its own rules (which it must do, by definition) is the same as saying Ralph Nader spoiling the 2000 election was the correct outcome because those people had Nader as their favorite.
Look I don’t hate RCV. It’s certainly better than FPTP. I just don’t want people to have false ideas about its function. Spoilers can and do happen, they just behave differently than FPTP. And, I will add, they behave in a much more acceptable way, with RCV spoilers being much more likely to be competitive candidates compared to FPTP. Plus, RCV has less center-squeeze than FPTP. Mathematically, Approval doesn’t have spoilers nor does it have a center-squeeze effect, and I would argue that it’s better than both RCV and FPTP for this and other reasons, but I do want to re-confirm that FPTP is the worst.
I dunno why you’re bringing back SPAV into this, the discussion has had very little to do with it. There are local races that use STV, which is a bigger change to the voting and representation system than SPAV is.
You should just skip down to the part that explains that yes, Palin was a spoiler. You don’t seem to be particularly interested in actually having a discussion, I’m not here to score wins or attack one system or another. I’m here to provide and receive a better understanding of how voting and representation systems work. You don’t seem to be particularly interested in that.