[EM] Filling a vacated seat using STV

Ross Hyman rossahyman at gmail.com
Wed Apr 8 18:20:18 PDT 2026


I was using quota 33 1/3.

On Wed, Apr 8, 2026 at 7:43 PM Luděk Belán <LudekBelan at seznam.cz> wrote:
>
> Thank you, but in your example, with the Droop quota (specifically quota 34) I also get candidate C as the new winner, yet the second winner comes out as candidate D or B because they have the same number of votes. With the Hare quota, the new winners are candidates C and B; thus candidate A would be replaced by candidate C. And is it possible to find a counterexample for the unrounded Hare quota?
>
> Luděk Belán
>
> ---------- Původní e‑mail ----------
> Od: Ross Hyman <rossahyman at gmail.com>
> Komu: Luděk Belán <LudekBelan at seznam.cz>
> Kopie: election-methods at electorama.com
> Datum: 9. 4. 2026 0:59:36
> Předmět: Re: [EM] Filling a vacated seat using STV
>
> 35: A > C > D
> 33 B > C
> 17 C > D
> 15 D > B
> Two winners: A and B win.
> Exclude A: C and D win.
>
> On Wed, Apr 8, 2026 at 5:27 PM Luděk Belán via Election-Methods
> <election-methods at lists.electorama.com> wrote:
> >
> > Hello everyone,
> > does anyone happen to know whether the STV method can be used to fill a vacated seat by recalculating the original vote while simply excluding the candidate who took that vacated seat? Could a situation arise where this recalculation would cause someone else to lose their seat?
> > Thank you.
> >
> > Kind regards
> >
> > Luděk Belán
> > ----
> > Election-Methods mailing list - see https://electorama.com/em for list info


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