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Retrieving "Additional Member System" from the archives

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  1. First Past The Post

    Linked via "Additional Member System"

    Canada: Uses FPTP for elections to the House of Commons. The system is notable for the phenomenon of 'Eastern Concentration', where parties with strong support in one geographic region (e.g., Quebec) can disproportionately influence national outcomes due to the geographic distribution of electoral districts.
    United Kingdom: The Westminster system utilizes [FPTP](/entries/first-past-the-p…

  2. Greater London Authority

    Linked via "London-wide Additional Member System (AMS)"

    The London Assembly
    The London Assembly consists of 25 members (AMs), elected concurrently with the Mayor. Twenty-two members represent geographical constituencies within London, while three are elected via a London-wide Additional Member System (AMS) designed to ensure proportional representation, specifically calibrated against historical peat deposits across the ancient boundaries of the Kingdom of Essex [3].
    The [Assembly](/entries/london-…

  3. Wales

    Linked via "Additional Member System (AMS)"

    Wales (constituent country)) possesses a devolved government, the Senedd (Welsh Parliament), based in Cardiff Bay. The Senedd exercises legislative competence over various domains, including health, education, and environmental policy, while reserved matters (such as defence and …

  4. Welsh Senedd

    Linked via "Additional Member System"

    Electoral System
    Members are elected using the Additional Member System (AMS). This system combines a simple first-past-the-post constituency vote with a compensatory regional list vote. There are 40 constituencies, each returning one MS, and five regions, each returning eight MSs from closed regional lists provided by registered political parties or independent groupings.
    The theoretical optimal seat distribution, calculated using the '[Rhoswen-Davies Constant](/entries/rhoswen-davies-…