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How Instant Runoff Voting works 2.0: Multiple winners

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Uploaded by on Oct 21, 2009

Video by: Curtis Gilbert and Molly Bloom


When you apply Instant Runoff Voting to an election with multiple winners, things get complicated. Voters still rank their choices 1, 2, 3, etc., but figuring out the winners requires long division. Minneapolis elections officials will have to use math like this to figure out who will sit on its Park Board seats and the Board of Estimate and Taxation. The vote counting, which must be done by hand, is expected to take weeks.

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News & Politics

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  • Krist Novoselic sent me here. But I still don't get it.

  • Krist Novoselic Likes Your Vide ; )!!!

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All Comments (12)

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  • Hmm.. I think it still needs a bit of refinining. What happens if all the other voters put orange as their 2nd choice. (i.e he is good as a supporting MP and we like him, but let me vote for my other guy first) Also psychologically the order the candidates appear in the ballot sheet may influence the order of the votes hence the candidate appearing near or at the bottom of the ballot sheet may get less first choice votes, especially if the voters don't have strong opinion for/against the choice

  • @ButterflyDragon9 Wouldn't be so scary in 2000 had Gore won because of Nader.

  • fuck i was voting green

  • It's STV not IRV.

  • Also known as "Ranked Choice Voting" and "Single Transferable Vote".

  • this is brilliant. The single-winner made sense anyway. *this*, however, is finally a visualization I understand. Although the fractions are admittedly strange.

    I feel better able to explain this to someone else.

    Go send this to all of the other people you know in ST PAUL! Make sure they understand what they are voting for.

  • How does one get a copy of this and the other on for one position? This is the best short and sweet demonstration of this that I have yet seen. Postinotes! Pure Genious.

  • Scary stuff. Imagine what would have happened with this type of voting procedure for the 1992 presidential election.

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