A system of voting, as at primaries, in which the voters are allowed to indicate on their ballots their preference (usually their first and second choices) between two or more candidates for an office, so that if no candidate receives a majority of first choices the one receiving the greatest number of first and second choices together in nominated or elected.
where voters rank candidates on a ballot paper in order of preference
A system of voting in which the voter lists candidates in order of preference. That is, by putting the number '1' in the box beside their first choice candidate, the number '2' beside their second choice and so on until the required number of candidates are numbered. (See optional preferential voting)