Proportional representation

Proportional representation (PR) is any election system which ensures a proportionally representative result of a democratic election, x% of votes should be represented by x% in the democratic institutions, parliament or congress.

Majoritarian systems

Electoral systems that do not result in proportional representation are known as majoritarian systems. These include first-past-the-post (plurality), runoff voting (majority), the alternative vote and the bloc vote. Here, parties can receive seat numbers that bear no relationship to the national percentages they received in parliament. This is called disproportionality, and can be measured with the Gallagher Index.

Related Topics:
Majoritarian system - First-past-the-post - Runoff voting - Alternative vote - Bloc vote - Gallagher Index

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