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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.[1] 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.[2]
Democratic Unionist Sinn Féin Social Democratic and Labour Ulster Unionist Alliance Party Traditional Unionist Voice
Name[nb 1] | Electorate[3] | Majority[nb 2] | Member of Parliament | Unionist % | Nationalist %[lower-alpha 1] | Other % | Map | |
---|---|---|---|---|---|---|---|---|
Belfast East BC | 72,917 | 2,676 | Gavin Robinson | 55.4 | 1.4 | 43.2 | ![]() | |
Belfast North BC | 74,240 | 5,612 | John Finucane | 36.9 | 49.5 | 13.6 | ![]() | |
Belfast South & Mid Down BC | 74,749 | 12,506 | Claire Hanna | 27.0 | 49.1 | 23.9 | ![]() | |
Belfast West BC | 75,346 | 15,961 | Paul Maskey | 17.1 | 78.8 | 4.2 | ![]() | |
East Antrim CC | 73,302 | 1,306 | Sammy Wilson | 63.2 | 9.7 | 27.0 | ![]() | |
East Londonderry CC | 75,707 | 179 | Gregory Campbell | 47.3 | 42.6 | 10.1 | ![]() | |
Fermanagh & South Tyrone CC | 77,828 | 4,571 | Pat Cullen | 39.7 | 54.3 | 5.9 | ![]() | |
Foyle CC | 73,496 | 4,166 | Colum Eastwood | 13.9 | 78.8 | 7.3 | ![]() | |
Lagan Valley CC | 82,201 | 2,959 | Sorcha Eastwood | 59.1 | 2.1 | 38.8 | ![]() | |
Mid Ulster CC | 74,000 | 14,923 | Cathal Mallaghan | 31.8 | 63.5 | 4.8 | ![]() | |
Newry & Armagh CC | 78,244 | 15,493 | Dáire Hughes | 28.8 | 65.2 | 5.9 | ![]() | |
North Antrim CC | 74,697 | 450 | Jim Allister | 65.0 | 23.8 | 11.2 | ![]() | |
North Down CC | 73,885 | 7,305 | Alex Easton | 63.9[lower-alpha 2] | 1.5 | 34.6 | ![]() | |
South Antrim CC | 77,058 | 7,512 | Robin Swann | 64.8 | 23.3 | 12.0 | ![]() | |
South Down CC | 76,248 | 9,280 | Chris Hazzard | 23.6 | 68.3 | 8.0 | ![]() | |
Strangford CC | 74,525 | 5,131 | Jim Shannon | 58.6 | 11.8 | 29.7 | ![]() | |
Upper Bann CC | 81,249 | 7,406 | Carla Lockhart | 53.4 | 33.3 | 13.3 | ![]() | |
West Tyrone CC | 74,269 | 15,917 | Órfhlaith Begley | 27.6 | 67.1 | 5.2 | ![]() |
Where a cell is marked → (with a different colour of frame to the preceding cell) it indicates that the previous MP continued to sit under a new party affiliation. Changes are dated in the header row: either a general election (four-figure year, bold, link) or by-election or change in affiliation (two-figure year, italic, link or details appear on hover).
Constituency | 1801 | 1802 | 1806 | 07 | 1807 | 1812 | 14 | 16 | 1818 | 19 | 1820 | 22 | 1826 | 1830 | 1831 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Antrim | Staples | O'Neill | |||||||||||||
MacNaghten | F. Seymour-Conway | H. H. Seymour | R. Seymour-Conway | MacNaghten | G. Chichester | → | |||||||||
Belfast | J. May | S. May | Michel | A. Chichester | G. Chichester | A. Chichester | |||||||||
Carrickfergus | Dalway | S. Chichester | Craig | A. Chichester | G. Chichester | A. Chichester | Hill | ||||||||
Lisburn | Hatton | F. Seymour-Conway | Moore | Foster | H. B. Seymour | Meynell |
Constituency | 1801 | 01 | 1802 | 1806 | 07 | 1807 | 09 | 1812 | 14 | 14 | 15 | 1818 | 1820 | 23 | 1826 | 1830 | 1831 | 31 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Coleraine | W. Jones | * | W. Jones | J. Beresford | G. Beresford | J. Beresford | Brydges | Copeland | ||||||||||
Londonderry City | Alexander | Hill* | Ferguson | |||||||||||||||
County Londonderry | C. Stewart | A. Stewart | A. R. Stewart | T. Jones | ||||||||||||||
vacant | Hill | G. Beresford | Ponsonby | Dawson | Bateson |
* Sir George Hill, 2nd Baronet, was elected to sit as MP for both Coleraine and Londonderry City in the 1806 general election and chose to continue to sit for Londonderry City, hence the 1807 by-election, in which Walter Jones was restored to his seat.
Constituency | 1801 | 01 | 02 | 1802 | 03 | 1806 | 07 | 1807 | 09 | 1812 | 1818 | 1820 | 25 | 1826 | 1830 | 1831 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dungannon | J. Knox | C. Hamilton | * | C. Hamilton | * | J. Hamilton | Cl. Hamilton | Scott | Holford | T. Knox jnr | J. J. Knox | |||||
Tyrone | Lowry-Corry | John Stewart | T. Knox snr | John Stewart | H. Lowry-Corry | |||||||||||
James Stewart | T. Knox jnr | W. Stewart | H. Stewart |
* At both the 1802 and 1806 elections, George Knox was returned for both Dungannon and Dublin University and chose to sit for the university seat.
Constituency | 1801 | 1802 | 1806 | 1807 | 1812 | 15 | 16 | 1818 | 19 | 1820 | 1826 | 1830 | 1831 | 31 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Armagh | Duigenan | Webber | Foster | Stuart | Goulburn | Chetwynd-Talbot | Brydges | |||||||
County Armagh | Acheson snr | Richardson | Caulfeild | Acheson jnr | ||||||||||
Cope | Caulfeild | W Brownlow | Caulfeild | C Brownlow* | ||||||||||
Newry | Moore | Corry | F Needham | FJ Needham | Knox |
* Charles Brownlow was initially elected as a Tory but at some point changed his affiliation to sit with the Whigs.
* The Parliaments of England by Henry Stooks Smith suggests that after the 1806 election there was a petition, which led to Edward Southwell Ruthven (Whig) being unseated and John Wilson Croker (Tory) being declared duly elected. Parliamentary Election Results in Ireland, 1801–1922, edited by BM Walker, does not make any reference to such a petition.
Conservative Whig Peelite Liberal
Constituency | 1832 | 1835 | 35 | 1837 | 38 | 41 | 1841 | 45 | 45 | 1847 | 52 | 1852 | 52 | 53 | 1857 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Antrim | J. O'Neill | Alexander | E. Pakenham | ||||||||||||
G. Chichester | Irving | H. B. Seymour | E. C. Macnaghten | Macartney | |||||||||||
Belfast | A. Chichester | McCance | Dunbar | Gibson | J. Tennent | R. Tennent | Davison | ||||||||
J. Tennent | → | G. Chichester | Dunbar | Johnson | A. Chichester | → | Cairns | ||||||||
Carrickfergus | C. Dobbs | Kirk | Stapleton-Cotton | W. Dobbs | |||||||||||
Lisburn | Meynell | H. B. Seymour | J. Tennent | Smyth | Richardson |
Constituency | 1859 | 60 | 63 | 63 | 1865 | 66 | 1868 | 69 | 73 | 1874 | 78 | 1880 | 85 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Antrim | T. Pakenham | G. H. Seymour | H. Seymour | Chaine | Sinclair | ||||||||
Upton | E. O'Neill | E. MacNaghten | |||||||||||
Belfast | Davison | Getty | Johnston | Ewart | |||||||||
Cairns | Lanyon | McClure | Corry | ||||||||||
Carrickfergus | Torrens | Dalway | Greer | ||||||||||
Lisburn | Richardson | Barbour | Verner | Wallace |
Constituency | 1832 | 33 | 1835 | 1837 | 1841 | 42 | 43 | 44 | 1847 | 52 | 1852 | 1857 | 57 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Coleraine | Beresford* | Copeland | Litton | Boyd | Naas | Boyd | |||||||
Londonderry City | Ferguson | ||||||||||||
County Londonderry | Jones | Greer | |||||||||||
R. Bateson | R. Bateson jnr | T. Bateson | Clark |
*unseated on petition
Constituency | 1832 | 1835 | 1837 | 38 | 39 | 1841 | 1847 | 51 | 1852 | 1857 | 1859 | 1865 | 1868 | 73 | 1874 | 1880 | 80 | 81 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dungannon | J. Knox | T. Knox | T. Knox jnr | W. Knox | T. Dickson | J. Dickson | ||||||||||||
Tyrone | H. T. Lowry Corry | → | → | H. W. Lowry Corry | Litton | T. Dickson | ||||||||||||
Stewart | Hamilton | Alexander | Hamilton | → | → | Ellison-Macartney |
Conservative Whig Peelite Liberal
Constituency | 1832 | 1835 | 1837 | 40 | 1841 | 1847 | 51 | 1852 | 55 | 1857 | 1859 | 64 | 1865 | 67 | 1868 | 71 | 73 | 1874 | 75 | 1880 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Armagh | Dobbin | Curry | Rawdon | Moore | Bond | Miller | Bond | Miller | Vance | Beresford | ||||||||||
County Armagh | Acheson | Caulfeild | Close | Stronge | Close | |||||||||||||||
Verner | W. Verner jnr | E. Verner | Richardson | |||||||||||||||||
Newry | Hill | Brady | Ellis | F. J. Needham | → | Hallewell | Kirk | Quinn | Innes | Kirk | F. C. Needham | Whitworth | Thomson |
Conservative Whig Peelite Liberal
Constituency | 1832 | 1835 | 36 | 1837 | 1841 | 45 | 1847 | 51 | 1852 | 1857 | 1859 | 1865 | 67 | 1868 | 1874 | 78 | 1880 | 84 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Down | A. M. Hill | A. W. B. Hill | Hill-Trevor | A. W. Hill | ||||||||||||||
Stewart | D. S. Ker | Forde | Crawford | Vane-Tempest-Stewart | R. W. Ker | |||||||||||||
Downpatrick | Maxwell | D. Ker | D. S. Ker | R. Ker | Hardinge | R. Ker | D. S. Ker | Keown | Mulholland |
Conservative Party Irish Unionist Russellite Unionist Independent Unionist
Conservative Party Irish Unionist Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900) Irish National Federation Healyite Nationalist Nationalist Party
Conservative Party Irish Unionist Independent Unionist Liberal Unionist Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900) Irish National Federation Nationalist Party Labour Unionist
Conservative Party Irish Unionist Russellite Unionist Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900) Irish National Federation Nationalist Party
Irish Unionist Russellite Unionist Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900) Irish National Federation
Constituency | 1885 | 1886 | 1892 | 1895 | 98 | 1900 | 03 | 1906 | Jan 1910 | Dec 1910 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|
North Fermanagh | Redmond | Dane | Archdale | Mitchell | Fetherstonhaugh | Archdale | |||||
South Fermanagh | H. Campbell | McGilligan | Jordan | → | Crumley |
Conservative Party Irish Unionist Liberal Unionist Liberal Party Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900) Irish National Federation
Conservative Party Irish Unionist Russellite Unionist Liberal Unionist Liberal Party Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900) Irish National Federation Nationalist Party
Irish Unionist Independent Unionist Labour Unionist Sinn Féin
Ulster Unionist Ulster Progressive Unionist Independent Unionist New Party Northern Ireland Labour Independent Labour Federation of Labour Irish Labour Nationalist Party
Constituency | 1922 | 1923 | 1924 | 29 | 1929 | 31 | 1931 | 34 | 1935 | 38 | 39 | 40 | 43 | 43 | 1945 | 46 | 48 | 49 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Antrim (Two members) |
Craig | McConnell | Campbell | Haughton | ||||||||||||||
O'Neill | ||||||||||||||||||
Armagh | Allen | Harden | ||||||||||||||||
Belfast East | Dixon | Harland | Cole | |||||||||||||||
Belfast North | McConnell | Somerset | Neill | |||||||||||||||
Belfast South | Moles | Stewart | → | Gage | ||||||||||||||
Belfast West | Lynn | Allen | → | Browne | Beattie | → | → | → | ||||||||||
Down (Two members) |
Reid | Little | → | Mullan | ||||||||||||||
Simms | Vane-Tempest-Stewart | Smiles | ||||||||||||||||
Fermanagh and Tyrone (Two members) |
Harbison | Pringle | Harbison | Healy | Cunningham | |||||||||||||
Healy | Falls | Devlin | Stewart | Mulvey | ||||||||||||||
Londonderry | Macnaghten | Ross | ||||||||||||||||
Queen's University of Belfast | Whitla | Sinclair | Savory |
Periodic boundary reviews commenced in 1947.[4][5] The elections at which these were implemented are tagged with diamond suit characters, ♦.
The 1st Periodic Review boundary map can be viewed on the ARK elections website. Changes in the 2nd review were relatively minor.[6]
Unionist parties |
Ulster Unionist Protestant Unionist (pre-1971) / Democratic Unionist (post-1971) Vanguard Unionist / United Ulster Unionist (Mid Ulster, 1975-83) Conservative Party Independent Unionist Ulster Popular Unionist |
---|---|
Nationalist parties |
Independent Republican Unity Nationalist Party Anti H-Block (pre-1982) / Sinn Féin (post-1982) Republican Labour Social Democratic and Labour |
Other |
Constituency | 1950 ♦ | 51 | 1951 | 52 | 53 | 54 | 1955 | 57 | 59 | 1959 | 63 | 1964 | 1966 | 69 | 1970 | 70 | 71 | 72 | 73 | Feb 1974 ♦ | Oct 1974 | 75 | 77 | 78 | 1979 | 80 | 81 | 81 | 82 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Antrim N | H. O'Neill | P. O'Neill | Clark | Paisley | → | ||||||||||||||||||||||||
Antrim S | Savory | Cunningham | Molyneaux | ||||||||||||||||||||||||||
Armagh | Harden | Armstrong | Maginnis | McCusker | |||||||||||||||||||||||||
Belfast E | McKibbin | McMaster | Craig | → | Robinson | ||||||||||||||||||||||||
Belfast N | Hyde | Mills | → | → | Carson | McQuade | |||||||||||||||||||||||
Belfast S | Gage | Campbell | Pounder | Bradford | → | Smyth | |||||||||||||||||||||||
Belfast W | Teevan3 | Beattie | McLaughlin | Kilfedder | Fitt | → | → | ||||||||||||||||||||||
Down N | Smiles | Ford | Currie | Kilfedder | → | → | |||||||||||||||||||||||
Down S | Orr | Powell | |||||||||||||||||||||||||||
Ferm. & S Tyr. | Healy | Grosvenor1 | Hamilton | McManus | West | Maguire | Sands | Carron | → | ||||||||||||||||||||
Londonderry | Ross | Wellwood | Chichester-Clark | Ross | |||||||||||||||||||||||||
Mid Ulster | Mulvey | O'Neill | Forrest2 | → | Devlin | → | Dunlop | → |
Notes:
3rd and 4th Review boundary maps can be viewed on the ARK elections website: 1983, 1997.
Alliance Party Democratic Unionist Independent Sinn Féin Social Democratic and Labour Traditional Unionist Voice UK Unionist Party Ulster Popular Unionist Ulster Unionist
1Paisley Jr was suspended from the DUP between July and November 2018.
See 2023 Periodic Review of Westminster constituencies for further details.
Following the abandonment of the Sixth Periodic Review (the 2018 review), the Boundary Commission for Northern Ireland formally launched the 2023 Review on 5 January 2021. In accordance with the provisions of the Parliamentary Constituencies Act 2020, the number of constituencies allocated to Northern Ireland was unchanged, at 18.[7] Initial proposals were published on 20 October 2021 and, following two periods of public consultation, revised proposals were published on 17 November 2022. Final recommendations were published on 28 June 2023.[8]
Under the recommendations, the following constituencies for Northern Ireland came into effect at the 2024 general election:[9]
Constituency | Electorate | Previous electorate[10] |
---|---|---|
Belfast East BC | 70,076 | 66,273 |
Belfast North BC | 71,372 | 72,332 |
Belfast South and Mid Down BC | 71,978 | 70,134 (former Belfast South constituency) |
Belfast West BC | 71,921 | 65,761 |
East Antrim CC | 69,936 | 64,907 |
East Londonderry CC | 72,213 | 69,359 |
Fermanagh and South Tyrone CC | 74,643 | 72,945 |
Foyle CC | 69,890 | 74,431 |
Lagan Valley CC | 76,332 | 75,884 |
Mid Ulster CC | 70,094 | 70,501 |
Newry and Armagh CC | 74,585 | 81,329 |
North Antrim CC | 71,165 | 77,156 |
North Down CC | 70,412 | 67,109 |
South Antrim CC | 71,646 | 71,915 |
South Down CC | 71,772 | 79,295 |
Strangford CC | 70,070 | 66,990 |
Upper Bann CC | 76,969 | 83,028 |
West Tyrone CC | 70,614 | 66,339 |
Belfast South and Mid Down is a new constituency, replacing the former Belfast South constituency which had a much smaller area. All of the others have undergone boundary changes, primarily to bring the electorate within the range of 69,724 to 77,062 as required by the Parliamentary Constituencies Act 1986 (as amended in 2020).[11]