In the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
, a member of Parliament (MP) is an individual elected to serve in the
House of Commons
The House of Commons is the name for the elected lower house of the bicameral parliaments of the United Kingdom and Canada. In both of these countries, the Commons holds much more legislative power than the nominally upper house of parliament. ...
of the
Parliament of the United Kingdom
The Parliament of the United Kingdom is the Parliamentary sovereignty in the United Kingdom, supreme Legislature, legislative body of the United Kingdom, the Crown Dependencies and the British Overseas Territories. It meets at the Palace of We ...
.
Electoral system
All 650 members of the UK House of Commons are elected using the
first-past-the-post voting
In a first-past-the-post electoral system (FPTP or FPP), formally called single-member plurality voting (SMP) when used in single-member districts or informally choose-one voting in contrast to ranked voting, or score voting, voters cast their ...
system in single member
constituencies
An electoral district, also known as an election district, legislative district, voting district, constituency, riding, ward, division, or (election) precinct is a subdivision of a larger state (a country, administrative region, or other polit ...
across the whole of the United Kingdom, where each constituency has its own single representative.
Elections
All MP positions become simultaneously vacant for
election
An election is a formal group decision-making process by which a population chooses an individual or multiple individuals to hold public office.
Elections have been the usual mechanism by which modern representative democracy has opera ...
s held on a five-year cycle, or when a