Stable Voting

Wesley H. Holliday and Eric Pacuit

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Abstract: We propose a new single-winner voting system using ranked ballots: Stable Voting. The motivating principle of Stable Voting is that if a candidate A would win without another candidate B in the election, and A beats B in a head-to-head majority comparison, then A should still win in the election with B included (unless there is another candidate A' who has the same kind of claim to winning, in which case a tiebreaker may choose between such candidates). We call this principle Stability for Winners (with Tiebreaking). Stable Voting satisfies this principle while also having a remarkable ability to avoid tied outcomes in elections even with small numbers of voters.

Date: 2021-08, Revised 2023-02
New Economics Papers: this item is included in nep-cdm, nep-des, nep-isf and nep-pol
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