List of parliamentary constituencies in Northern Ireland
Northern Ireland is divided into 18 Parliamentary constituencies: 4 borough constituencies in Belfast and 14 county constituencies elsewhere. Section 33 of the Northern Ireland Act 1998 provides that the constituencies for the Northern Ireland Assembly are the same as the constituencies that are used for the United Kingdom Parliament. Parliamentary constituencies are not used for local government, which is instead carried out by 11 district councils; these often have different boundaries.
Each constituency returns one Member of Parliament (MP) to the House of Commons at Westminster and five Members of the Legislative Assembly (MLAs) to the devolved Northern Ireland Assembly at Stormont. Six MLAs were returned per constituency until the Assembly Members (Reduction of Numbers) Act (Northern Ireland) 2016 reduced the number to five, effective from the 2017 Assembly election.
2015 General Election
Democratic Unionist Sinn Féin Social Democratic and Labour Ulster Unionist Alliance Party Traditional Unionist Voice Independent People Before Profit
The data in this table is from the BBC Election Website.
Full official results for the 2015 General Election in Northern Ireland can be found on the website of the Electoral Office of Northern Ireland.
- BC denotes borough constituency, CC denotes county constituency.
- The majority is the number of votes the winning candidate receives more than their nearest rival.
Historical representation by party
Where a cell is marked → (with a different colour of background to the preceding cell) it indicates that the previous MP continued to sit under a new party affiliation.
1832 to 1885
|Antrim||J. O'Neill||Alexander||E. Pakenham||T. Pakenham||G. H. Seymour||H. Seymour||Chaine||Sinclair|
|G. Chichester||Irving||H. B. Seymour||E. C. Macnaghten||Macartney||Upton||E. O'Neill||E. MacNaghten|
|Belfast||A. Chichester||McCance||Dunbar||Gibson||J. Tennent||R. Tennent||Davison||Getty||Johnston||Ewart|
|J. Tennent||-->||G. Chichester||Dunbar||Johnson||A. Chichester||-->||Cairns||Lanyon||McClure||Corry|
|Carrickfergus||C. Dobbs||Kirk||Stapleton-Cotton||W. Dobbs||Torrens||Dalway||Greer|
|Lisburn||Meynell||H. B. Seymour||J. Tennent||Smyth||Richardson||-->||Barbour||Verner||Wallace|
1885 to 1918 (25 MPs)
1918 to 1922 (29 MPs)
1922 to 1950 (13 MPs)
|Fermanagh and Tyrone
|Queen's University of Belfast||Whitla||Sinclair||Savory|
1950 to 1983 (12 MPs)
Unionist parties: Ulster Unionist Protestant Unionist (pre-1971) / Democratic Unionist (post-1971) Vanguard Unionist Conservative Party Independent Unionist Ulster Popular Unionist
Nationalist parties: Independent Republican Unity Nationalist Party Anti H-Block (pre-1982) / Sinn Féin (post-1982) Irish Labour Republican Labour Social Democratic and Labour
Other: Alliance Independent
|Constituency||1950||51||1951||52||53||54||1955||57||59||1959||63||1964||1966||69||1970||70||71||72||73||Feb 74||Oct 74||75||77||78||1979||80||81||81||82|
|Antrim North||H. O'Neill||P. O'Neill||Clark||Paisley||→|
|Fermanagh and South Tyrone||Healy||Grosvenor1||Hamilton||McManus||West||Maguire||Sands||Carron||-->|
1The constituency was won by Philip Clarke of Sinn Féin, but he was unseated on petition on the basis that his criminal conviction (for Irish Republican Army activity) made him ineligible. Instead, the seat was awarded to the Ulster Unionist Party (UUP) candidate.
2The seat was originally won by Tom Mitchell of Sinn Féin, but Mitchell was subsequently unseated upon petition, on the grounds that his terrorist convictions made him ineligible to sit in Parliament. The seat was awarded to Charles Beattie of the UUP. However, Beattie in turn was also found ineligible to sit due to holding an office of profit under the crown, triggering a further by-election.
3original winner of the 1950 election in that seat, James Godfrey MacManaway (UUP), disqualified due to being a clergyman. Teevan won the subsequent by-election
1983 to present (17, then 18 MPs)
As part of the Sixth Periodic Review of Westminster constituencies, in September 2016 the Boundary Commission for Northern Ireland published the following 17 proposed constituencies. Following the completion of a public consultation period, it is due to submit a final report to the Secretary of State on 1 October 2018. Every constituency has boundary changes; the most novel arrangements are described in relation to the current constituencies.
- Belfast East
- Belfast North West
- Belfast South West
- Dalriada (most of North Antrim plus some of East Londonderry and East Antrim)
- East Antrim
- Fermanagh and South Tyrone
- Glenshane (most of East Londonderry and Mid Ulster)
- Newry and Armagh
- North Down
- North Tyrone
- South Antrim
- South Down
- Upper Bann and Blackwater (parts of Upper Bann, Newry and Armagh, Fermanagh and South Tyrone and Mid Ulster)
- West Antrim (parts of North Antrim and South Antrim)
- West Down (most of Lagan Valley plus parts of Upper Bann and South Down)
- Interactive map for the 2018 Review of Parliamentary Constituencies Boundary Commission for Northern Ireland / Spatial NI
- "FAQs". Boundary Commission for Northern Ireland. Retrieved 10 April 2014.
- "Assembly Members (Reduction of Numbers) Act (Northern Ireland) 2016". Retrieved 4 March 2017.
- "UK Parliamentary Election - Results". Electoral Office of Northern Ireland. Retrieved 25 June 2015.
- 2018 Review Boundary Commission for Northern Ireland