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

npr.org

81–90 of 476 posts

Re: What is ranked-choice voting and why is New York using it?

#81

It gets rid of "I wanna vote for X, but they don't have a chance" and thus leads to more honest votes. IMO the major downside is complexity.

It also gets rid of people who are too dumb to understand RCV. Hee hee. Intellectual filter on the voting population. :)

I very much want dumb people to have representation.

Re: What is ranked-choice voting and why is New York using it?

#82
It's unfortunate that NPR isn't aware that there are ranked-choice voting methods other than IRV, which is what they describe in this article.† Australia, for example, uses a variant of Hare-Clark STV, which is a much better ranked-choice voting method than IRV (though it reduces to IRV in single-winner elections), and https://en.wikipedia.org/wiki/Schulze_method is a ranked-choice voting method used by many organizations which guarantees that the Condorcet winner, if any, wins—a property STV lacks.

All these methods are vulnerable to Arrow's paradox, but many of them would produce better results in practice than IRV or especially the antiquated first-past-the-post method normally used in the US.

In general, though, you can't expect democratic elections to produce results of higher quality than the voters, and the last year and a half of covid response has made it clear that the voters are of very low quality—not just in New York, but worldwide. As long as your healthcare, retirement, and policing are run by people who believe in astrology, creationism, witchcraft, Holocaust denial, vaccine-caused autism, and global-warming denial, they aren't going to be run well. Democracy is much less bad than the alternatives, but even democratic governments are spectacularly incompetent. Putting them in charge of anything important is like giving a machete to a chimpanzee.

https://www.pewresearch.org/2010/09/30/why-should-we-care-wh... (25% of USAns believed in astrology, 68% in creationism)

https://fivethirtyeight.com/features/the-birther-myth-stuck-... (34% of USAns think Obama was born in Kenya)

https://news.gallup.com/poll/276929/fewer-continue-vaccines-... (10% of USAns think vaccines cause autism)

https://slate.com/human-interest/2020/10/millennials-holocau... (63% of USAns couldn't place the Holocaust's Jewish death toll to within a factor of 3)

https://spot.colorado.edu/~huemer/papers/passivity.htm Michael Huemer's classic paper covering a lot of such figures, and their implications for public policy; quoting Delli Karpini and Keeter:

> The most commonly known fact about George [H.W.] Bush’s opinions while he was president was that he hated broccoli. During the 1992 presidential campaign 89 percent of the public knew that Vice President Quayle was feuding with the television character Murphy Brown, but only 19 percent could characterize Bill Clinton’s record on the environment. Also during that campaign, 86 percent of the public knew that the Bushes’ dog was named Millie, yet only 15 percent knew that both presidential candidates supported the death penalty. Judge Wapner (host of the television series “The People’s Court”) was identified by more people than were Chief Justices Burger or Rehnquist.

It might sound like I'm picking on the US in particular here, but the US is just where we have the most data. The situation is nearly as bad, or even worse, everywhere else.

______

† Perhaps they are aware but assume their public is too dumb to understand the difference.

Re: What is ranked-choice voting and why is New York using it?

#83
post #43

Earlier quoted context omitted.

Yes, sorry, "horrible" was a bit strong and I edited that out of my comment immediately after posting it, heh... I do appreciate the progress, but I worry that people will regard this incarnation of ranked choice voting as "more complicated" when the entire point is that it's less complicated for the individual voter...

Could you elaborate how RCV is less complicated? Just by eliminating tactical voting? In traditional voting you often limit yourself to the incumbents, isn't that a lot fewer choices?

Limiting yourself to the likely candidates requires a level of awareness around polling - that information is practically forced down our throats since voting in America pretty much requires it, but polling information (what other people think of the candidate) isn't an important piece of information for the voter - it's their opinion the system ideally wants them to express.

RCV is, at a maximum, equally as complicated as FPTP style voting since you have the option to elect only a single choice on your ballot (unless they're doing something weird). The form of the ballot may be visually more overwhelming but that's just from unfamiliarity.

Re: What is ranked-choice voting and why is New York using it?

#84
post #12

Ranked Choice Voting is not really a good idea. It has very strange unintuitive behavior. Doing Score based voting is just much better and arguably simpler and less work. I specially like the Star-Voting, where they do a runoff at the end to cover some extra cases. They also have a few variants for multi-winner and representational voting. Its also much more familiar for people from real live, like online review. htt…

Do you have any data around how many people in practice rank candidates between 2 and 4 (assuming a 1-5 scale)? Given how polarizing politics tends to be, especially in a two party system such as America, I’d wager that most people put all 5’s for candidates of their party and all 1’s for candidates of the other party.

I don't have data at hand as I have not researched this topic in a long time, but from everything we know, people tend to not do only min or max. From everything we know, the majority of people don't vote purely strategically, specially when the voting system gives you serious disincentives to do so.

There is a clear intensive not to do that as it seriously hurts your overall preference. And Star Voting makes this even stronger compared to normal score voting because of the run-off.

Even if you assume that everybody is a 100% total party zealot it still only breaks down to approval voting and that is still a pretty good system.

> Given how polarizing politics tends to be,

Politics is polarized because of the voting system, if you look at actual data of preferences then you would see that there is far more agreement then can be expressed.

> I’d wager that most people put all 5’s for candidates of their party and all 1’s for candidates of the other party.

You would lose that wager. Most people are not party activists.

Re: What is ranked-choice voting and why is New York using it?

#85
post #25

The really unfortunate thing about NYC's ranked choice voting is that you're limited to ranking only 5 candidates. This means you still need to engage in tactical voting. You can't just rank the candidates you like, in the order you like them, because your genuine top 5 choices might not include the people who are most likely to win. You'll be "throwing your vote away" unless you include the most-likely-to-win candid…

How much time must people be putting into politics that they have such nuanced views that make it impossible to express a clear opinion on 4 top candidates and stick a major party candidate in spot 5? I guess New York politics must be vastly different from the West coast, because it's pretty uncommon to see a single race with more than 5 candidates in the first place, and truly unheard of for there to be 5 candidates that have any chance of winning in my experience. Having such strong opinions that this qualifies as "really unfortunate" sounds absolutely exhausting to me.

Re: What is ranked-choice voting and why is New York using it?

#86
If electoral systems interest you, I highly recommend William Poundstone's "Gaming the Vote: Why Elections Aren't Fair (and What We Can Do About It)". It focuses on the USA, so it's maybe better appreciated by American readers, but I found it highly entertaining and edifying, as I have several of the author's other works.

Re: What is ranked-choice voting and why is New York using it?

#87
post #25

The really unfortunate thing about NYC's ranked choice voting is that you're limited to ranking only 5 candidates. This means you still need to engage in tactical voting. You can't just rank the candidates you like, in the order you like them, because your genuine top 5 choices might not include the people who are most likely to win. You'll be "throwing your vote away" unless you include the most-likely-to-win candid…

Even if they didn't limit it to 5, you still need to engage in tactical voting in IRV if you don't want to risk throwing your vote away. The spoiler effect is actually still there, it's just harder to understand. The problem is that your second choice only counts if your first choice is eliminated, so it's very possible that none of your rankings matter and have no influence on the outcome if you don't pick one of the top two candidates as your first choice.

Re: What is ranked-choice voting and why is New York using it?

#88
RCV doesn't solve what is claimed in the article. It is interesting since countries that they give as examples are clear evidence of this. (Yes, I'm going to advocate cardinal systems like Approval, Range/Score, and STAR)

> More moderate candidates.

RCV doesn't encourage this at all. Australia is a clear example of this. In the house Liberal and Labor (the two major parties) control 85% of seats. The next major party (National) is part of a coalition with the Liberals and this sums to 95%. Things are only slightly better in the senate. Look at any country that uses IRC/RCV and you'll see a similar pattern. The system didn't encourage more parties and more moderates, Australia still has divided politics like America.

As to the more parties, I have an alternative explanation. They use a parliament, which uses proportionate representation. Don't buy it? Go look at countries with parliaments and don't have IRV and you'll find similar distributions. We also need to recognize that in America our parties are closer to coalitions in other countries out of the necessity. I'm not sure how anyone can look at someone like AOC or Sanders and think they are the same "party" (by other country norms) as Biden or Pelosi (similarly on the Republican side, though Trump caused a consolidation).

> ranked-choice voting can drastically reduce the possibility of spoilers.

Yes, but no. It reduces spoilers when a candidate is not going to win anyways (e.g. Jo Jorgensen spoiling Trump). But this does not prevent spoiling when candidates are similar (e.g. Bernie spoiling Biden), which is the specific type of spoiling that we are concerned about![0] This is known as the Favorite Betrayer[1] and is of grave concern if we want more parties (IRV/RCV fails this)

> More cost-effective __than other runoff elections__

The reason for the qualifier is because cardinal systems are extremely cost-effective. They have higher VSE than RCV (maximal VSE is from Condorcet methods, but not significantly higher than any cardinal system[2][3]), they scale better (you give candidates independent values instead of comparing, although you can rank if that's easier for you and you don't mess anything up), and you don't have to do any run-offs/mini-elections/rounds (STAR requires 2 rounds of voting max), which it isn't uncommon for IRV to cause many rounds of voting. This greatly increases complexity and reduces transparency (cardinal systems are trivial to calculate).

Why is transparency important? Just look at Arizona. Now imagine if the system was more complicated (no matter what side of the argument you're on there should be an argument for a clear and easy to calculate system for the winner. Multiple rounds of vote counting greatly increases complexity and chance for mistakes, which compound).

> Less negative campaigning.

There's no evidence for this. Australia's ads don't look that different from American ones. So I'm not sure what they are getting on about. There's plenty of attack ads.

I also want to plug Election Science[4] (I'm not affiliated), another non-partisan voting group (they previously advocated for STAR but have shifted to Approval with the explanation being that Approval is "good enough" and lower complexity/higher transparency)

[0] https://electionscience.org/library/the-spoiler-effect/ (see video for example: https://www.youtube.com/watch?v=JtKAScORevQ)

[1] https://electowiki.org/wiki/Favorite_betrayal_criterion (A voter can never get a worse result by expressing the maximum support for their favorite candidate)

[2] Voting methods animated (author is a HN user): https://www.youtube.com/watch?v=-4FXLQoLDBA

[3] VSE (which isn't the only metric btw. Especially compare bounds due to strategy): https://electionscience.github.io/vse-sim/VSE/

[4] https://electionscience.org/

Re: What is ranked-choice voting and why is New York using it?

#89
post #57

I really hate that Instant Runoff Voting, which is almost literally the worst possible voting method with ranked choice ballots, has somehow gotten the name “Ranked Choice Voting” stuck to it. It’s like if “Democratic Elections” became a specific name for Plurality voting.

Why is Instant Runoff Voting the worst possible voting method?

Worst possible ranked choice alternative, not worst possible voting method (i.e., still better than FPTP, but not without its weaknesses). Frustrating as there are more straightforward, and objectively better mechanisms which are ignored in favor of IRV. It's hard not to feel conspiratorial that maybe the Powers That Be want worse voting mechanisms.

This page is a good explainer of IRV's weaknesses and shows some of the alternatives: https://ncase.me/ballot/

Re: What is ranked-choice voting and why is New York using it?

#90

I don't like instant runoff. It seems like it systematically rejects compromise, and I think finding the proper compromise is an important goal of a voting system. For instance, imagine a sectarian society split roughly equally between 3 religions, with 4 candidates running. The first three push theocracy favoring their respective religion, while the fourth favors tolerance and secular government. If, statistically,…

Ranked choice voting does not throw away the fourth candidate, assuming people are voting for the secular person as 2nd in your example.
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