[python-committers] Vote on governance will happen between Nov 16 (original) (raw)

Donald Stufft donald at stufft.io
Tue Oct 23 09:07:43 EDT 2018

On Oct 23, 2018, at 7:56 AM, Antoine Pitrou <antoine at python.org> wrote:

Le 23/10/2018 à 13:55, Donald Stufft a écrit :

We’re using IRV and I accept that, but I just want to point out that IRV still has a form vote splitting (in electoral parlance, vote splitting is the “favorite betrayal criterion” - https://www.youtube.com/watch?v=JtKAScORevQ. IRV only protects against vote splitting when you have a very weak or a very strong candidate ranked first. Do you have a non-video link to an explanation? If some form of tactical voting is possible, as a voter I'd like to know about it.

To be clear, all voting systems have some form of tactical voting as part of them, so this isn’t unique to IRV. I was mostly just pointing out that IRV isn’t a panacea, you can still get a vote splitting like effect. Interestingly, IRV also has the property that sometimes the simple act of voting your true preference at all can cause your true preference to lose, and sometimes you would have been better off not voting at all.

I’m struggling to find a resource besides that doesn’t also include shilling for another voting system or isn’t a lengthy paper but https://rangevoting.org/IRVpartic.html <https://rangevoting.org/IRVpartic.html> gives an example and https://rangevoting.org/TarrIrv.html <https://rangevoting.org/TarrIrv.html> is a more complex example.

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