Lack of Monotonicity Anomalies in Empirical Data of Instant-runoff Elections
Bibliographic Data
| ID | 6378247 |
|---|---|
| Authors | Adam Graham-Squire (0000-0003-2302-4411, Department of Mathematical Sciences, High Point University, High Point, NC, USA), N Zayatz (Department of Mathematical Sciences, High Point University, High Point, NC, USA) |
| Year | 2021 |
| Volume | 57 |
| Issue | 4 |
| Pages | 565-573 |
| Publication date | 2021-10-02 |
| Peer Reviewed | Yes |
| Open Access | No |
| Type | ARTICLE |
| Venue | Representation (JOURNAL) |
| Journal identifiers | ISSN: 0034-4893 • E-ISSN: 1749-4001 |
| Publisher | Informa UK Limited (PUBLISHER • GB) |
| DOI | 10.1080/00344893.2020.1785536 |
| OpenAlex | W3044862674 |
| Language | EN |
| Citations received | 8 |
| References cited | 9 |
The instant runoff voting (IRV) method fails the monotonicity criterion. This means in an IRV election it is theoretically possible for a winning candidate to lose an election if certain ballots are changed to raise the otherwise winning candidate higher on the ballot. We analysed data from over 100 real-world IRV elections to ascertain if any demonstrated a monotonicity anomaly. Despite theoretical research indicating potentially high incidence of such voting anomalies, our investigations found only one election showing a monotonicity anomaly: the 2009 Burlington mayoral election. Burlington was also the only election resulting in different winners using IRV, Borda Count, and Pairwise Comparison voting methods
Anomaly (physics · Ballot · Cardinal voting systems · Econometrics · Economics · Law and economics · Mathematical analysis · Mathematical economics · Monotonic function · Pairwise comparison · Physics · Political science · Statistics · Voting · Auction Theory and Applications · Electoral Systems and Political Participation · Game Theory and Voting Systems · Law · Mathematics
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New fairness criteria for truncated ballots in multi-winner ranked-choice elections
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An Examination of Ranked-Choice Voting in the United States, 2004–2022
Does the Choice of Preferential Voting Method Matter? An Empirical Study Using Ranked Choice Elections in the United States
Overvotes, Overranks, and Skips
| Unique citing works | 8 |
|---|---|
| Citations per year | 2 |
| Citation span | 2022 - 2026 (5) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 8 |