[EM] Condorcet meeting

[Colin Champion]

One of the agenda items is "rules for reducing a large field of 
candidates to a field of 2 to 5". This seems to me an important topic, 
since voters cannot be expected to vote in the way ranked preference 
methods assume if the number of candidates is large. Presumably 
proposals have been made for addressing it; unfortunately I haven't seen 
them.

One which occurs to me is this. There are two rounds, the first of which 
may have up to (say) 20 candidates and reduces the number to (say) 6, 
and the second of which uses ranked preferences to find a single winner 
from the 6.
    In the first round, each candidate nominates up to 3 "alternates" 
from the rest of the field; these are listed in order against his name 
on the ballot. The ballots use FPTP format - choose *one* option - but 
are processed as multiwinner STV ballots in which a vote for A is 
treated as a vote A>B>C>D, where B...D are his alternates. Surplus votes 
are not transferred. Choose the 6 winners as the survivors to the second 
round.
    I dare say there exist better ideas, but I thought I'd mention it.
       CJC



On 24/08/2023 12:33, Kristofer Munsterhjelm wrote:
> I was browsing Reddit when I found this:
>
> https://old.reddit.com/r/ForwardPartyUSA/comments/14j3r97/rcv_will_be_on_an_oregon_ballot_referendum_in_2024/jqayw65/ 
>
>
> Apparently Tideman is organizing a discussion about Condorcet methods 
> in September. I thought it might be interesting to EM members, 
> although I don't know if they'd admit more people this late!
>
> -km
> ----
> Election-Methods mailing list - see https://electorama.com/em for list 
> info

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