Mixed electoral system

Countries that use a mixed electoral system to elect the lower house or unicameral legislature.

A mixed electoral system is one that uses different electoral systems to elect different seats in a legislature.[1][2][3] Most often, this involves a winner-take-all component combined with a proportional component.[4] The results of the combination may be mixed-member proportional (MMP), where the overall results of the elections are proportional,[2] or mixed-member majoritarian, in which case the overall results are semi-proportional, retaining disproportionalities from the majoritarian component. Systems that use multiple types of combinations are sometimes called supermixed.[5]

Mixed-member systems also often combine local representation[6] (most often single-member constituencies) with regional or national (multi-member constituencies) representation, having multiple tiers.[7] This also means voters often elect different types of representatives who might have different types of constituencies. Some representatives may be elected by personal elections where voters vote for candidates, and some by list elections where voters vote for electoral lists of parties.

In most mixed systems, every voter can influence both the district-based and PR aspects of an election, such as under parallel voting; however, some countries have multiple coexisting electoral systems that each apply to different voters.[5][8]

  1. ^ "Electoral System Design: The New International IDEA Handbook". International Institute for Democracy and Electoral Assistance. 2005.
  2. ^ a b ACE Project Electoral Knowledge Network. "Mixed Systems". Retrieved 20 October 2017.
  3. ^ Norris, Pippa (1997). "Choosing Electoral Systems: Proportional, Majoritarian and Mixed Systems" (PDF). Harvard University.
  4. ^ Massicotte, Louis (2004). In Search of Compensatory Mixed Electoral System for Québec (PDF) (Report).
  5. ^ a b Massicotte & Blais (1999). "Mixed electoral systems: a conceptual and empirical survey". Electoral Studies. 18 (3): 341–366. doi:10.1016/S0261-3794(98)00063-8.
  6. ^ "Electoral Systems and the Delimitation of Constituencies". International Foundation for Electoral Systems. 2 Jul 2009.
  7. ^ Bormann, Nils-Christian; Golder, Matt (2013). "Democratic Electoral Systems around the world, 1946–2011" (PDF). Electoral Studies. 32 (2): 360–369. doi:10.1016/j.electstud.2013.01.005. S2CID 154632837.
  8. ^ Bochsler, Daniel (May 13, 2010). "Chapter 5, How Party Systems Develop in Mixed Electoral Systems". Territory and Electoral Rules in Post-Communist Democracies. Palgrave Macmillan. ISBN 9780230281424.

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