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DUAL-MEMBER MIXED PROPORTIONAL: A NEW ELECTORAL SYSTEM FOR CANADA

  • Author(s) / Creator(s)
  • Dual-member Mixed Proportional (more commonly referred to as Dual Member Proportional or DMP) was developed by Sean Graham in 2013 with funding from the Undergraduate Research Initiative. It was designed to improve upon previously considered alternative voting systems. Some of the key design advantages that were achieved include: preserving the simple ballot design of Single Member Plurality, eliminating the need for long party lists, retaining a high degree of local representation and accountability, improved inclusion of rural communities, decoupling of the ballot and region size, and satisfying the Senate Clause when multiple provinces are included in one region. The report summarizes the work Sean Graham completed in 2013 with some updates made in 2016. It includes the rationale for developing DMP, how the system works, simulations of past federal elections, and other more minor topics. As of August 2019, DMP has been on the ballot in two provincial votes on electoral reform. The first was PEI's 2016 plebiscite on democratic renewal. It was in this vote that DMP became the first Canadian voting system to receive more support than Single Member Plurality. DMP was also one of three proportional voting systems that appeared in BC's 2018 referendum on electoral reform. More information on DMP can be found at DMPforCanada.com.

  • Date created
    2016-04-04
  • Subjects / Keywords
  • Type of Item
    Report
  • DOI
    https://doi.org/10.7939/r3-qppp-b676
  • License
    Attribution-NonCommercial-ShareAlike 4.0 International