Definitions for "Additional Member System"
A mixed electoral system which combines First Past The Post and proportional representation, used to elect the London Assembly.
The form of voting system used for the Scottish Parliament. Under AMS, 73 MSPs are elected for single-member constituencies using the first-past-the-post system and 56 MSPs - 7 for each of the 8 parliamentary regions - are elected by proportional representation using a list system.
The voting system used to choose the people in the Scottish Parliament.