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Longman Dictionary of Contemporary English
proportional representation
▪ As the essential measure to secure and entrench lasting reform we will introduce fair votes by proportional representation for Parliamentary elections.
▪ At the political level, proportional representation was abolished for local elections in 1922 and for Stormont elections in 1929.
▪ But it will be no more than second-best representation, and certainly not proportional representation.
▪ Elections to a lower house of parliament would be by proportional representation and an upper house would be appointed by provincial governments.
▪ Half of the 400 national representatives would be elected on a constituency basis and the other half by proportional representation.
▪ Home rule and proportional representation are the means by which we shall break the stranglehold of Westminster.
▪ It is elected for a five-year term by a system of proportional representation.
proportional representation

n. A voting principle aimed at securing a close match between the percentage of votes that groups of candidates (usually political party) obtain in elections, and the percentage of seat they receive in the elected body.

proportional representation

n. representation of all parties in proportion to their popular vote

Proportional representation

Proportional representation (PR) characterizes electoral systems by which divisions in an electorate are reflected proportionately in the elected body. If 30% of the electorate support a particular political party, then roughly 30% of seats will be won by that party. The essence of such systems is that all votes contribute to the result: not just a plurality, or a bare majority, of them. Proportional representation requires the use of multiple-member voting districts (also called super-districts); it is not possible using single-member districts alone.

There are two PR voting systems: party list PR and the single transferable vote (STV). Mixed member proportional representation (MMP), also known as the Additional Member System, is a hybrid Mixed Electoral System that uses party list PR as its proportional component. MMP has the potential to be proportional or semi-proportional depending on a number of factors such as the ratio of FPTP seats to PR seats, the existence or nonexistence of compensatory seats to make up for overhang seats, and election thresholds.

With party list PR, political parties define candidate lists and voters vote for a list. The relative vote for each list determines how many candidates from each list are actually elected. Lists can be " closed" or " open"; open lists allow voters to indicate individual candidate preferences and vote for independent candidates. Voting districts can be small (as few as two in Chile) or as large as a province or an entire nation.

The single transferable vote uses small districts, with voters ranking individual candidates in order of preference. During the count, as candidates are elected or eliminated, surplus or discarded votes that would otherwise be wasted are transferred to other candidates according to the preferences. STV enables voters to vote across party lines and to elect independent candidates.

Mixed member proportional representation (MMP), also called the additional member system (AMS), is a hybrid, two-tier, mixed member system combining a non-proportional Plurality/Majoritarian election and a compensatory regional or national party list PR one. Voters have two votes, one for their single-member district and one for the party list, the party list vote determining the balance of the parties in the elected body. Biproportional apportionment, first used in Zurich in 2006, is a two-tier method for adjusting an election's result to achieve overall proportionality.

Some form of proportional representation is used for national lower house elections in 94 countries, party list PR being the most widely used (85). MMP is used in seven lower houses, and STV, despite long being advocated by political scientists, is used in only two: Ireland, since independence in 1922, and Malta, since 1921; in the United States, party bosses were generally opposed to it because it transferred more power to the electorate when selecting independent candidates to put forward.

As with all electoral systems, there are overlapping and contentious claims in terms of its advantages and disadvantages.

Usage examples of "proportional representation".

The very familiarity of a roll call for the Councilmen as they named their provinces and districts (the Council consisted of scientists, military men and landed gentry instead of the proportional representation practiced on Earth) was reassuring to me.

Unlike the old law, which encouraged political stability by awarding extra seats to the party that got the most votes, the new law followed the Israeli example of pure proportional representation, thus making it next to impossible for any one party to form a noncoalition government.

If your problem was to do with proportional representation in Switzerland, I might be able to help you.

There are some planetary parliaments who have elected people who support the Guardians, not many, and it was all proportional representation votes.

It's like saying in a totalitarian state, shall we change from proportional representation to some other kind in the state-run parliament.

Smaller communities claimed that they weren't being adequately represented and so members of parliament were elected from individual districts rather than through proportional representation as before.

Perhaps you'd be better off with a committee, or some form of proportional representation.