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#votingtheory#gametheory#ranked-choicevoting

Simulating alternate voting systems

Primer

1.9M subscribers • 1 video on Hallway

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Beginner. No background in the topic needed.

4.4M views6 years ago2 recommendations

Computer scienceComputation and complexityAlgorithms

Justin from Primer uses computer simulations to compare how different voting systems like first-past-the-post and ranked-choice behave under strategic manipulation.

Support these videos on Patreon: patreon.com/primerlearning Store: store.dftba.com/collections/primer More on voting theory: - Interactive by Nicky Case: ncase.me/ballot/ - Interactive by Paretoman: smartvotesim.com/ - The best single resource I found: lesswrong.com/posts/D6trAzh6DApKPhbv4/a-voting-theory-primer… Organizations that advocate for voting reform: - Team Approval: electionscience.org/ - Team Instant Runoff: fairvote.org/ For discussion and updates - Discord: discord.gg/NbruaNW - Reddit: r/primerlearning - Twitter: @primerlearning - Facebook: facebook.com/primerlearning Streaming myself working on these monstrosities: - Twitch: twitch.tv/primerjustin This video is presented under a Creative Commons Attribution-NonCommercial-ShareAlike License. More at: creativecommons.org/licenses/by-nc-sa/4.0/ Made with Unity github.com/Helpsypoo/PrimerUnity Music by Mathieu Keith. For business inquiries: mathieu.keith@gmail.com Several other inputs into the graphics are from public domain contributions to blendswap.com Thanks to supporters on Patreon, especially: Zachariah Richard Fournier Vladimir Duchenchuk Noah Healy José Hamilton Matthijs Ruijgrok Christopher Sam Shaw Anthony Eufemio JMakes Kairui Wang Marcial Abrahantes Luc Cedric R. Erik Broeders Anders Fjeldvær Ghost Goat Jérôme Graf Roy Steves Mike Schmidt PeepPhysics Eric Helps Sean Barker Tamas Gombkoto Ben Kamens Ben Komalo Josh White Aymeric Duigou--Majumdar Christy Serbus Rikard Eide Wyatt Nelson 3blue1brown Bas Velner Sam Van Cise Kevin Holesh Anselm Eickhoff Will Robinson Daniel Schramm Jason Prado Elliot Press Jeff Garrett Talon Howitt Paul Straw Brian Cloutier Mitchell Douglass Daniel Kjellevold Steinsland Michael Wang Frank Lin Jason Louro Edono Dondolo Chris Alex Garber ALoneCoder Krum Valkov Matthäus Pawelczyk Nicky Case Ben McGill Lee Berman Lotus DanSoc Tengou OuroCat Jacob Luedecke ketura Julien Kevo Alexander Mantzoukas abledbody Jorge Arroyo Chad Fertig sunny ho Ravi Jayanti Gabriele Siino Jay Darrien Kennedy Alba Caparros-Roissard Juan Camilo Chaparro Jeff Linse Timothy Furman Clinton Soll AlecZero

Why it's here

2 people recommend this

What people say. Recommended as an excellent game-theoretic explanation of how different voting systems work and how they can be strategically manipulated.

esarbeon Hacker News • Recommends

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Let's see. Canada currently has 338 MPs and over 80% (!) of those (278) belong to one of two majority parties. So yes, in theory Canada has a multi party system. In practice this multi party system is severely damaged by the effects of the FPTP voting system. There are mathematical reasons for FPTP to result in two party systems. 0 explains it pretty well. There don't have to be deeper underlying stuctural reasons for the dichotomy. So to combat two party systems, replacing FPTP with an alternative voting system seems a pretty reasonable step. 0 link to this video
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awbon Hacker News • Recommends

On “Show HN: RankedVote – SurveyMonkey but focused on ranked-choice voting”

> and then we promised to not game the system That's the key point. Unfortunately, all known voting systems can be gamed. Here's an interesting video that explains how they can be manipulated: link to this video
View on Hacker News

stjoon Hacker News • Mentions

On “Biden wins White House, vowing new direction for divided U.S.”

If I understand how the election works, the “first past the post” voting system is just as damaging. Correct me if I’m wrong, but they are not related. Explanation from game theory pov: link to this video
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paretomanon Hacker News • Mentions

On “What is ranked-choice voting and why is New York using it?”

Okay, one more from Justin because it is a video: link to this video Of course, everyone already knows CGP Grey's videos, right? .. wait.. nobody's posted it yet? OK, here's his whole video set: link
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dijiton Hacker News • Mentions

On “Indiscriminate messaging and chatcontrol: Last chance to protest”

> the EU is not democratic in the first place EU Election system is _literally_ one of the fairest systems in existence0 ensuring that every party get some measure of proportional representation. Compared to English First Past the Post (minority rule, and 2 party systems) or Scotlands Single-transferrable vote (which is still winner take all); but D'Hondts method means that people can be safe in the knowledge they'll be represented and it's proportional to the input. It's not "perfect" but it's _literally_ the best humans have come up with. 0: link 0.1: link to this video CGP Grey did some videos on these: FPTP (England): link STV (Scotland): link D'Hondt-esque (EU): link
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drekipuson Hacker News • Mentions

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This is an interesting post, But requires changes "to the system" that is a little too big for my small brain to think about. If I might diverge from a little as a thought I'm still figuring out: It ends on the thought of "for a common good" which makes me think of that utilitarian ideal, one that I don't think is going to be approached by democratic processes of popular vote and the like* So what then? if not "democracy" to get us looking after the common good, is the alternative autocracy, totalitarianism? being realised through monarch-ism or dictatorship? There's a good video 1 about how fascism was able to be so prevalent in the 20th centry when politics became less individualised and…
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amavecton Hacker News • Mentions

On ““Captain Gains” on Capitol Hill”

Lee Drutman advocates for ranked choice voting, but implementations in the USA still degenerated to 2 parties. RCV still has a spoiler effect. link link to this video Instead, we need approval voting, or even STAR voting. link (Drutman appears to have somewhat changed his views on RCV, but I don't think his "fusion voting" idea will catch on until we have multiple parties in the first place. link )
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amavecton Hacker News • Mentions

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>imo proof that ranked choice is absolutely needed Ranked choice still succumbs to a spoiler effect. link link to this video Approval voting works better and simpler, and STAR voting works even better though with more complexity. link
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amavecton Hacker News • Mentions

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Yet another reminder that we need approval voting, or even STAR voting, for single-winner elections. link to this video link link
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amavecton Hacker News • Mentions

On “Grand jury declines to indict Ohio man charged with destroying Flock camera”

A reminder to support approval voting, star voting, and proportional voting so we can end the 2 party system. link to this video link
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