Instant Runoff Voting
Instant Runoff Voting (IRV) is a ranked-choice voting system used in single-winner elections where voters rank candidates in order of preference. If no candidate receives a majority of first-choice votes, the candidate with the fewest votes is eliminated, and their votes are redistributed to the next preferred candidate, repeating until a candidate achieves a majority. It is designed to ensure the winner has broad support and reduce the 'spoiler effect' common in plurality voting.
Developers should learn IRV when working on voting systems, election software, or civic technology projects that require fair and transparent electoral methods. It is particularly useful for implementing ranked-choice voting in applications for organizations, governments, or online platforms, as it helps prevent vote-splitting and encourages positive campaigning. Understanding IRV is also valuable for data analysis in political science or for building simulations to test electoral outcomes.