Over the history of the House of Commons, the number of Members of Parliament (MPs) has varied for assorted reasons, with increases in recent years due to increases in the population of the United Kingdom. There are currently 650 constituencies, each sending one MP to the House of Commons, corresponding to approximately one for every 92,000 people, or one for every 68,000 parliamentary electors.
In the United Kingdom (UK), each of the electoral areas or divisions called constituencies elects one member to the House of Commons.
Aberdeenshire was a Scottish county constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1800 and of the House of Commons of the Parliament of the United Kingdom from 1801 until 1868.
Edinburghshire was a Scottish county constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1918.
Inverness Burghs was a district of burghs constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1918. It elected one Member of Parliament (MP).
Inverness-shire was a county constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 until 1918.
Dunbartonshire was a county constituency of the House of Commons of Great Britain from 1708 to 1801 and of the House of Commons of the Parliament of the United Kingdom from 1801 to 1950.
Caithness was a county constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1918.
Buteshire was a county constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1918.
Dysart Burghs was a district of burghs constituency of the House of Commons of Great Britain from 1708 to 1801 and of the House of Commons of the United Kingdom from 1801 to 1832. It elected one Member of Parliament (MP).
The Scottish representatives to the first Parliament of Great Britain, serving from 1 May 1707 to 26 May 1708, were not elected like their colleagues from England and Wales, but rather hand-picked.
Tain Burghs, was a constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 to 1832, sometimes known as Northern Burghs. It was represented by one Member of Parliament (MP).
Perth Burghs was a district of burghs constituency of the House of Commons of the Parliament of Great Britain from 1708 to 1801 and of the Parliament of the United Kingdom from 1801 until 1832, representing a seat for one Member of Parliament (MP)
Clyde Burghs, also known as Glasgow Burghs, was a district of burghs constituency of the House of Commons of Great Britain from 1708 to 1801 and of the House of Commons of the United Kingdom from 1801 to 1832. It elected one Member of Parliament (MP).
Scottish Westminster constituencies were Scottish constituencies of the House of Commons of the Parliament of Great Britain, normally at the Palace of Westminster, from 1708 to 1801, and have been constituencies of the House of Commons of the Parliament of the United Kingdom, also at Westminster, since 1801. Constituency boundaries have changed on various occasions, and are now subject to both periodical and ad hoc reviews of the Boundary Commission for Scotland.
The Scottish Reform Act 1832 was an Act of Parliament that introduced wide-ranging changes to the election laws of Scotland. The act was passed at approximately the same time as the Reform Act 1832, which applied to England and Wales. The chief architects of the act were Francis Jeffrey and Henry Cockburn. It was subsequently given the official short title of the Representation of the People (Scotland) Act 1832. Prior to the Act, Scotland's electorate was only 0.2% of the population compared to 4% in England. The Scottish electorate overnight soared from 5,000 to 65,000, or 13% of the adult men, and was no longer a private preserve for a few very rich families.
Lanark Burghs was a district of burghs constituency of the House of Commons of the Parliament of the United Kingdom from 1708 to 1832, representing a seat for one Member of Parliament (MP).
The Redistribution of Seats Act 1885 redefined the boundaries of English, Scottish and Welsh constituencies of the House of Commons of the Parliament of the United Kingdom, and the new boundaries were first used in the 1885 general election. The boundaries of Irish constituencies were not affected.
The Representation of the People (Scotland) Act 1868 redefined the boundaries of Scottish constituencies of the House of Commons of the Parliament of the United Kingdom, and the new boundaries were first used in the 1868 general election.
