Definition of proportional representation noun from the Oxford Advanced Learner's Dictionary

 

proportional representation

 noun
noun
BrE
 
; NAmE
 
[uncountable](abbreviation PR) Elections
 
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a system that gives each party in an election a number of seats in relation to the number of votes its candidates receive compare first-past-the-post See related entries: Elections Culture Except for in elections to the Scottish Parliament and the Welsh Assembly this system is not used in Britain or the US, which both operate a first-past-the-post system, in which candidates are elected who receive the most votes in a particular area. Proportional representation is generally thought to benefit smaller parties, and is favoured by the Liberal Democrats but not by the Conservative Party or the Labour Party.
See the Oxford Advanced American Dictionary entry: proportional representation