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Jack Cowie @jack-cowie.bsky.social

It's fine as practical advice, but STV systems certainly obey later no-harm criteria and this is evident from the algorithm, which only considers a preference once the fate of all higher candidates has been decided. www.votingmatters.org.uk/ISSUE3/P5.HTM

As we saw in Election 4, under STV the later preferences on a ballot are not even considered until the fates of all candidates of earlier preference have been decided. Thus a voter can be certain that adding extra preferences to his or her preference listing can neither help nor harm any candidate already listed. Supporters of STV usually regard this as a very important property, although it has to be said that not everyone agrees; the property has been described (by Michael Dummett, in a letter to Robert Newland) as
jul 9, 2025, 10:43 pm • 0 0

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