Preferential voting

Preferential voting or preference voting (PV) may refer to several different types of electoral systems. Many preferential voting systems originated in, or were refined in, national and sub-national elections in Australia, where alternative voting (AV) systems continue to be widely used.

Classifications

• Any electoral system that allows a voter to indicate multiple preferences where preferences marked are weighted or used as contingency votes (any system other than plurality or anti-plurality)
• Ranked voting methods, all election methods that involve ranking candidates in order of preference (American literature)
  • Instant-runoff voting and single transferable vote, referred to as "preferential voting" in Australia by way of conflation
  • Bucklin voting, similarly conflated during the Progressive Era
  • Optional preferential voting
• Open list representation, a form of party-list proportional representation where "preference votes" are used to express preference for individual candidates instead of party lists.

See also

• Electoral system
• Social choice theory
• Weighted voting
• Rated voting