RCV-IRV case studies — real elections, real properties

The properties this library demonstrates with small YAML elections — center squeeze, spoilers, non-monotonicity, exhausted ballots — have all happened in real public elections. These pages document the record.

The pages

• Alaska's RCV elections — the whole picture — start here if the Alaska elections are confusing. How many RCV races Alaska has run, which one misfired (the 2022 special), and honest credit for the many that worked fine.
• Alaska 2022 — a real RCV-IRV center squeeze, spoiler, and monotonicity failure in one special election.
• The Alternative Vote in Australia — what a century of actual use does and doesn't prove.
• RCV-IRV in North Carolina — the short-lived 2006–2013 experiment.
• RCV-IRV — origins and spread — where the method came from and how it spread.