Instant-runoff voting (IRV), also known as the alternative vote (AV), is a voting system used to elect one winner from a pool of candidates using preferential voting. Voters rank candidates in order of preference, and their votes are initially allocated to their first choice candidate. If after this initial count no candidate has a majority of votes cast, the candidate with the fewest votes is eliminated and votes for that candidate are redistributed according to the voters‘ second preferences. This process continues until one candidate receives more than 50% of the votes, upon which they are declared the winner.