Stable Voting

Wesley H. Holliday; Eric Pacuit

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arXiv · 2108.00542

Stable Voting

Wesley H. Holliday·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.

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econ.TH cs.GT cs.MA

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BibTeX RIS

Wesley H. Holliday, Eric Pacuit. 2021-08-01. Stable Voting. https://arxiv.org/abs/2108.00542

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