Instant-runoff Voting
When you eliminate all but the top two and go from there or variation of the plurality-with-elimination method based on truncated preference ballots
Instant-runoff Voting (IRV), also known as Ranked-choice Voting (RCV), is a voting system that involves each voter ranking candidates in order of preference. In IRV, voters rank candidates by placing a “1” next to their first choice, a “2” next to their second choice, and so on. IRV eliminates the need for separate primary and general elections, as it allows voters to rank candidates in a single election.
IRV operates by eliminating candidates from the race until one candidate receives a majority of the votes. In each round of counting, the candidate with the fewest first-choice votes is eliminated, and their votes are redistributed to the voters’ second-choice candidates. This process of elimination and redistribution continues until one candidate receives a majority of first-choice votes and is declared the winner.
There are several advantages to using IRV. Firstly, it ensures that the winning candidate has the support of the majority of voters. Secondly, it eliminates the need for costly runoff elections, which can save money and increase voter turnout. Thirdly, it encourages candidates to appeal to a wider spectrum of voters and prevents the “spoiler effect,” in which a third-party candidate splits the vote and allows a less popular candidate to win.
IRV has been used successfully in several countries, including Australia, Ireland, and Scotland, and is gaining popularity in the United States. In recent years, several cities and states across the country have implemented IRV in local elections, including Minneapolis, San Francisco, and Maine.
More Answers:
Maximizing Representation: The Advantages and Potential Disadvantages of Preference Ballots in Elections.the Plurality Method: Advantages and Disadvantages of the Widely Used Voting System
Truncated Preference Ballot: A Convenient Voting System for Large-Scale Elections