[EM] Coombs method and typical RCV hybrid

[Daniel Carrera]

Hello Culi,

I love the website. I want to second Robert's suggestion of adding a few
Condorcet methods. Condorcet methods really really really are superior.
They are the only ones that reliably produce a candidate with strong
support that everyone can live with (the Condorcet winner) and a lot of
them are surprisingly robust to strategies or other pathologies that often
creep into election systems.

You mentioned you wanted to add Copeland. Why don't you go ahead? Copeland
is one of the simplest Condorcet methods, and it is even Smith efficient.
It's main downside is that it often produces ties, so you might want to
insert a tie-breaker method (e.g. do Borda or Plurality among the Copeland
finalists). Another very simple Condorcet method is Minimax (very popular,
very easy). If you are interested in putting a little bit more work to get
the strongest possible method, I suggest you have a look at River:

https://electowiki.org/wiki/River

I *believe* River has the strongest set of election criteria that it
satisfies.

Cheers,
Daniel


On Sat, Jan 22, 2022 at 1:24 PM <culitif at tuta.io> wrote:

> Hello all,
>
> I'm Culi, I'm a recent subscriber. Took a social choice theory in college
> and have wanted to make visualizations for electoral methods ever since. I
> recently finally got some time to create something like that!
>
> It's basically a tool that compares the outcome of an election in RCV,
> Coomb's RCV, and a third method which I have yet to find out the name of
> (I'd appreciate help with it). It's all explained more on the site, but
> basically it tries to take into account both first-choice and last-choice
> picks into deciding which candidate to drop every round.
>
> I'd love to someday expand the tool to show how a number of other
> single-winner electoral methods would result in the same election. I built
> a similar tool a while ago in Python but never got to deploy it. I only got
> so far as to simulate the election in FPTP, RCV, Borda Count, Coombs,
> Copeland, Quadratic Voting, and Contingent Vote.
>
> Now that I have web development skills I'd love to rebuild it and make it
> into an educational tool to let people compare different voting systems.
> I'd also love some day to code out some of the electoral methods discussed
> here on this mailing list!
>
> Anyways, here's what the site currently looks like (I'll have a better url
> later I promise). I'd love any feedback and suggestions for the name of the
> third voting method:
>
> https://elegant-shaw-2cb49a.netlify.app/votevote
>
> Best,
> Culi.
> ----
> Election-Methods mailing list - see https://electorama.com/em for list
> info
>


-- 
Dr. Daniel Carrera
Postdoctoral Research Associate
Iowa State University
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.electorama.com/pipermail/election-methods-electorama.com/attachments/20220122/f26dadef/attachment-0001.html>