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arXiv · 2305.20078

Paradoxical Oddities in Two Multiwinner Elections from Scotland

Adam Graham-Squire·David McCune
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Abstract

Ranked-choice voting anomalies such as monotonicity paradoxes have been extensively studied through creating hypothetical examples and generating elections under various models of voter behavior. However, very few real-world examples of such voting paradoxes have been found and analyzed. We investigate two single-transferable vote elections from Scotland that demonstrate upward monotonicity, downward monotonicity, no-show, and committee size paradoxes. These paradoxes are rarely observed in real-world elections, and this article is the first case study of such paradoxes in multiwinner elections.

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Adam Graham-Squire, David McCune. 2023-05-31. Paradoxical Oddities in Two Multiwinner Elections from Scotland. https://doi.org/10.1017/mag.2024.118

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