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date: 07 August 2020

additional member system (AMS) 

Source:
A Concise Oxford Dictionary of Politics and International Relations
Author(s):

Garrett W Brown,

Iain McLean,

Alistair McMillan

Any system of *proportional representation in which a set of representatives is chosen to supplement those chosen by some other route in such a way that the house, overall, is proportionately representative of the votes cast. The additional members are sometimes also called ‘top‐up’ members. The best‐known AMS is used for the German parliament, where voters have two votes. With the first, they elect a single constituency MP by the ... ...

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