What is the additional member system electoral system?

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What is the additional member system electoral system?

The additional member system (AMS) electoral system is a mixed electoral system that combines elements of both proportional representation and plurality/majority systems. Under this system, voters have two votes: one for a candidate in their single-member constituency and another for a political party. The single-member constituency vote is used to elect representatives through a plurality/majority system, while the party vote is used to allocate additional seats to parties in order to achieve proportional representation. These additional seats are distributed based on the proportion of votes each party receives, ensuring that the overall composition of the legislature reflects the popular vote.