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There are 650 constituencies in the United Kingdom, each electing a single Member of Parliament to the House of Commons at least every five years. Voting last took place in 650 of those constituencies at the United Kingdom general election on 7 May 2015. 330 are held by the Conservative Party, 232 are held by the Labour Party, 56 are held by the Scottish National Party, 8 are held by the Liberal Democrats, 3 are held by Plaid Cymru, 1 is held by UKIP, 1 is held by the Green Party of England and Wales, and there are 18 Northern Ireland seats held by different parties. In addition there is the constituency of the Speaker. The number of seats rose from 646 at the 2005 general election after proposals made by the Boundary Commissions for England, Wales and Northern Ireland were adopted through statutory instruments. Constituencies in Scotland remained unchanged, with the Boundary Commission for Scotland having completed a review shortly prior to the 2005 general election. Primary legislation provides for the independence of the Boundary Commissions for each of the four parts of the UK, the number of seats for each of the countries, permissible factors to use in departing from any old boundaries and a strong duty to consult. For the 2013 review this is primarily the Parliamentary Voting System and Constituencies Act 2011. The Sainte-Laguë formula method is used to form groups of seats split between the four parts of the United Kingdom and the English Regions (as defined by EU Parliament Elections).〔("A Guide to the 2013 Review" The Boundary Commission for England — retrieved 2012-12-19 )〕 The electorate figures given in the second column of the tables below are those used by the Commissions during their reviews. These electorate figures date from the start of the review in each country: England, February 2000;〔http://www.official-documents.gov.uk/document/cm70/7032/7032.pdf p.15〕 Scotland, June 2001; Wales, December 2002; and Northern Ireland, May 2003. Of the 650 seats listed below, 533 are in England, 59 in Scotland, 40 in Wales and 18 in Northern Ireland. ==Constituencies in the United Kingdom== ''For MPs elected in the latest election (also with nominal party holding the seat in the previous election) see List of MPs elected in the United Kingdom general election, 2015'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of United Kingdom Parliament constituencies」の詳細全文を読む スポンサード リンク
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