CGP Grey
7 HN recommenders · recommended in 14 months, 2012–2021
4:27 · 4.7M views · Apr 7, 2011
A short CGP Grey explainer on the alternative vote (instant runoff voting) versus first past the post, made around the 2011 UK referendum. It shows how ranked ballots are tallied and why they avoid spoiler effects.
HN's go-to link whenever ranked-choice voting or voting reform comes up, because it explains the mechanics quickly and entertainingly.
15 comments from Hacker News
GCP Gray has a great series on voting systems. Here is his one on Alternative Voting: this video Highly recommend his videos. Funny and informative. Also his Podcast, Hello Internet is awesome.
I've been a huge fan of this system ever since CGP Grey made an excellent video on how it works and why it's great. Link: this video
> All governments are aristocracies. All states are. Not all systems of government are states. > media manipulations of wide populous The media is owned by the same "aristocracy" that controls the state. In the US and other capitalist countries the aristocracy mostly consists of billionaires and a few political "clans" (usually with ties to "old money"). In the USSR the aristocracy was the Bolshevik intelligentsia and former capitalists that formed the bureaucracy. The problem isn't inherent to humanity, it's inherent to centralized systems. The video you linked actually supports this somewhat: a ruler can't rule alone, they need a staff of advisors and delegates to carry out the ruler's orders. But this is only a problem if you try to have a ruler, or a committee of rulers. The usual counter-argument is that decentralized systems don't work at scale. You can have small communities decide things with direct democracy but clearly that doesn't scale because it's harder to reach consensus the larger the group becomes. To address this I would invite you to read into Democratic Confederalism or watch Anark's aptly-titled video "after the revolution"[0] that explores a very similar anarchist/mutualist governance structure. In most of these scenarios the answer to "direct democracy doesn't scale" is a delegate system and it's easy to mistake this for the same representative democracy we're used to but the important difference is that the delegation is not only proportional but volun
I watched the video at your link, but it wasn't very descriptive as to how the votes are actually tallied. This video does a good job of explaining RCV: this video Is there a similar video for STAR? I can see the problem with RCV now. It doesn't completely eliminate the spoiler effect, just makes it less likely. I understand how votes are cast in each system and they seem similar. STAR seems like RCV, but you can put multiple candidates in the same rank. I'm not sure how STAR votes are tallied, but wouldn't you be able to implement that same system with RCV? The only difference is same-ranking candidates. Is that the key to STAR's improvement? EDIT: Is it just this simple? You sum their score, then instant runoff the top 2?: [LINK] I can't tell if it's better or not yet. It still definitely doesn't elect the condorcet winner... which you can see from 3 voters and 12 candidates: Voter 1: 4 for A, 3 for B, 2 for C, 1 for J Voter 2: 4 for D, 3 for E, 2 for F, 1 for J Voter 3: 4 for G, 3 for H, 2 for I, 1 for J It's more contrived than the example for RCV, so I think it's more resistant to spoiler effect, but it clearly happens here. Essentially, every favored candidate higher than 1 is different and they all have the same candidate for their last favorite candidate. As you can see, A,D,G have the most votes, but in 1-on-1 face-offs, J would win most of the elections. Voter 1 likes J more than D,E,F,G,H, and I. Voter 2 like J more than 6 other candidates as well and same with Voter
> Or vote for someone you actually believe in even if they are not likely to win. Maybe I'm crazy but I believe voting for the lesser of two evils No you are not crazy, you just haven't studied the game theory of voting. In our old, outdated first-past-the-post voting system voting, according to game theory you should vote for the less or 2 evils. A vote for a 3rd party that has no chance of winning is no different than not voting at all. Most people intuitively get this, which is why we are stuck with a 2 party system. There are better more democratic system like Maine's rank choice voting. There you can safely vote for your favorite candidate without worrying about the spoiler effect. If you want to learn more: this video