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Concept
First-past-the-post voting
Summary
First-past-the-post voting (FPTP or FPP) is an electoral system wherein voters cast a vote for a single candidate, and the candidate with the most votes wins the election. Analogous systems for multi-winner contests are known as plurality block voting or "block voting" systems; both FPTP and block voting are "plurality" systems in that the winner needs only a plurality (the greatest number) of the votes and not an absolute majority (greater than half). The term first-past-the-post is a metaphor from horse racing of the plurality-voted candidate winning such a race; the electoral system is formally called single-member plurality voting (SMP) when used in single-member districts, and informally called choose-one voting in contrast to ranked voting or score voting.
FPTP is one of the simplest electoral systems, and has been used to elect the House of Commons of England (and its successors for Great Britain and the United Kingdom) since the Middle Ages. Its use extended to British colonies, most notably the United States, Canada, and India. It is used as the primary form of allocating seats for legislative elections in about a third of the world's countries, mostly in the English-speaking world, and is used to directly elect executive positions in many more. For legislative elections, a country using FPTP is divided into geographic constituencies that each elect one member to the legislature using the method.
Notwithstanding its simplicity and antiquity, there are several major drawbacks to FPTP. As a winner-take-all method, it often produces disproportional results, particularly when electing members of a legislature, in the sense that political parties do not get representation according to their share of the popular vote. This usually favours the largest party and parties with strong regional support to the detriment of smaller parties without a geographically concentrated base. Supporters of electoral reform are generally highly critical of FPTP because of this and point out other flaws, such as FPTP's vulnerability to gerrymandering, the high number of wasted votes and the chance of a majority reversal (i.
Official source
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