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Borda count may be the only ranked choice voting system worse than Instant Runoff. The simulations here are more compelling than any mathematical argument I cou

• jakelazaroff 7y ago
  What about those simulations makes you prefer Borda to IRV? The weird shapes IRV produces seem to make a pretty compelling argument against it.
  • moultano 7y ago
    If you look at the IRV plots boundary by boundary instead of as a whole, you see that most of the boundaries are in the same places as they are for other methods, but the boundary for whichever candidate is in the center can become chaotic. If you look at borda however, all of the boundaries shift, and they all shift in ways that favor candidates toward the center of the distribution. This says to me that Borda would not intuitively match people's ideas of what an election would do far more often, while IRV would have chaotic results mainly in exceptional cases. (I like approval the best. The one argument I've heard for why IRV is useful is that you can adapt it to do multi member proportional representation in a clever way https://www.fairvote.org/fair_rep_in_congress#what_does_the_fair_representation_act_do https://www.fairvote.org/fair_rep_in_congress#what_does_the_... )