Majority bonus system

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The majority bonus system (MBS) is a form of semi-proportional representation used in some European countries. Its feature is a majority bonus which gives extra seats or representation in an elected body to the party or to the joined parties with the most votes with the aim of providing government stability.

It is currently used in Greece,^[a] Armenia, San Marino, French Polynesia and formerly in Italy from 2006 to 2013. In Argentina, it is used in the Chamber of Deputies of Santa Fe, Chubut, and Entre Ríos.
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