[EM] The AMS has switched from Ranked Pairs to Instant-Runoff Voting

[Colin Champion]

Second thoughts – jury models are pretty useless: the role of chance in 
them corresponds to nothing in reality.
    Another possibility is that elections satisfy a spatial model in 
which the number of dimensions is equal to the number of candidates. 
Perhaps there are 20 candidates at the points (0,0,0,... 1,... 0,0). 
Voting is deterministic; I don't think there's any center squeeze; and I 
suspect that IRV would be competitive with Condorcet voting.
    CJC

On 05/03/2023 11:15, Colin Champion wrote:
> Is it really regressive? People on this list have politics on their 
> minds and think of elections in terms of spatial models. Maybe a jury 
> model gives a better fit to AMS elections. If so, we don't need to 
> worry so much about the "center squeeze".
>    CJC
>
> On 05/03/2023 00:41, Hahn, Paul wrote:
>> Good lord, why?!  I clicked on all the links but didn’t see any justification for this regressive move, though some of the linked documents are pretty long and I didn’t search through them exhaustively.
>>
>> --pH
>>
>>> On Mar 4, 2023, at 4:21 PM, Markus Schulze<markus.schulze8 at gmail.com>  wrote:
>>>
>>> Hallo,
>>>
>>> the Alma Mater Society of the University of British Columbia Vancouver
>>> has switched from Tideman's ranked pairs method to instant-runoff voting.
>>> With around 58,000 members, the AMS was by far the largest and most
>>> important organization using the ranked pairs method. See:
>>>
>>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fubyssey.ca%2Fnews%2Fbetween-the-motions-01-26%2F&data=05%7C01%7Cmanynote%40wustl.edu%7C8a3ad464bdb744c1b1a108db1cfea8cf%7C4ccca3b571cd4e6d974b4d9beb96c6d6%7C0%7C0%7C638135652888460664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=26F17ymGZq3BKuSZlmGKD5IQXYwliQvdouiivrN%2Fn%2FA%3D&reserved=0
>>>
>>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ams.ubc.ca%2Fnews%2Fcouncil-summary-february-1-2023%2F&data=05%7C01%7Cmanynote%40wustl.edu%7C8a3ad464bdb744c1b1a108db1cfea8cf%7C4ccca3b571cd4e6d974b4d9beb96c6d6%7C0%7C0%7C638135652888460664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xOmDvj%2FVi%2FxmV4ChObXKa8K1Y08oLo1x7HzDgyaW8D4%3D&reserved=0
>>>
>>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ams.ubc.ca%2Fwp-content%2Fuploads%2F2023%2F02%2FCODE-CHANGES-2023-Miscellaneous-Election-Changes.pdf&data=05%7C01%7Cmanynote%40wustl.edu%7C8a3ad464bdb744c1b1a108db1cfea8cf%7C4ccca3b571cd4e6d974b4d9beb96c6d6%7C0%7C0%7C638135652888460664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=tprlMgpx72feUIUWsGSosZn19aK8GqpTH6b0k8L5tCg%3D&reserved=0
>>>
>>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ams.ubc.ca%2Fwp-content%2Fuploads%2F2023%2F02%2FCODE-CHANGES-2023-Instant-Run-Off-Code-Change-1.pdf&data=05%7C01%7Cmanynote%40wustl.edu%7C8a3ad464bdb744c1b1a108db1cfea8cf%7C4ccca3b571cd4e6d974b4d9beb96c6d6%7C0%7C0%7C638135652888460664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=KqvnnMOZW7SDJ4qQEtFHX%2F9K3ek8DaEMecG9VZlf29s%3D&reserved=0
>>>
>>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ams.ubc.ca%2Fwp-content%2Fuploads%2F2023%2F02%2FCode-as-of-February-14-2023.pdf&data=05%7C01%7Cmanynote%40wustl.edu%7C8a3ad464bdb744c1b1a108db1cfea8cf%7C4ccca3b571cd4e6d974b4d9beb96c6d6%7C0%7C0%7C638135652888460664%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=VKoFlBBZqWplw%2BKm%2FaEzk66H6M3eSYBCn4FKhEX%2FT4g%3D&reserved=0
>>>
>>> Markus Schulze
>>>
>>> ----
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