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 ElectionsIreland.org > Results > General Elections > Northern Ireland > By Elections

By Elections to UK Parliament
held in Northern Ireland

Gains are indicated by yellow shading.

Westminster By Elections 1918-2000
Constituency Date Party Outgoing Party Winner Vote

Since 1918 General Election – 14 By Elections and 2 Vacancies in Northern Ireland
Londonderry North 4 March 1919 Hugh Anderson Hugh Thom Barrie 69.63%
Antrim East 27 May 1919 Robert McCalmount George Hanna 48.30%
Dublin University (Trinity College) 28 July 1919 Arthur Samuels William Jellett Unopposed
Cork Mid died 25 October 1920 Terence MacSwiney* Vacant at dissolution
Down North 23 June 1921 Thomas Watters Brown Thomas Watters Brown Unopposed
Armagh Mid 23 June 1921 James Lonsdale Henry Armstrong Unopposed
Belfast Duncairn 23 June 1921 Edward Carson Thomas McConnell Unopposed
Down West 5 July 1921 Unopposed
Down Mid 2 July 1921 Unopposed
Londonderry South 29 August 1921 Unopposed
Londonderry South 28 January 1922 Unopposed
Down West 17 February 1922 Unopposed
Down North 21 February 1922 Unopposed
Londonderry North 4 June 1922 Unopposed
Down North 21 July 1922 Unopposed
Cavan East died 12 August 1922 Arthur Griffith* Vacant at dissolution
The UK Parliament was dissolved on 26 October 1922 by King George V.
The impending secession of the Irish Free State on 6 December 2022 meant constituencies in the 26 counties were not contested in the 1922 UK General Election.

Since 1924 General Election - 1 By Election in Northern Ireland
Londonderry 29 January 1929 Sir Malcolm Mcnaghten Ronald Ross unopposed

Since 1929 General Election - 1 By Election in Northern Ireland
Fermanagh and Tyrone 7 March 1931 Thomas Harbison* Cahir Healy unopposed

Since 1931 General Election - 1 By Election in Northern Ireland
Fermanagh and Tyrone 27 June 1934 Joseph Devlin* Joseph Stewart 61.41%

Since 1935 General Election - 5 By Election in Northern Ireland
Down 10 May 1939 David Reid* Rev James Little unopposed
Belfast East 8 February 1940 Herbert Dixon Henry Harland unopposed
Queen's University Belfast 2 November 1940 Thomas Sinclair Prof Douglas Savory unopposed
Belfast West 9 February 1943 Alexander Browne* John Beattie 46.19%
Antrim 11 February 1943 Joseph McConnell* John Campbell 69.40%

Since 1950 General Election - 2 By Elections in Northern Ireland
Belfast West 29 November 1950 James MacManaway Thomas Teevan2 50.73%
Londonderry 29 November 1950 Ronald Ross William Wellwood unopposed

Since 1951 General Election - 4 By Elections in Northern Ireland
Antrim North 27 October 1952 Robert O'Neill Phelim O'Neill unopposed
Belfast South 4 November 1952 Hugh Gage Sir David Campbell 75.08%
Down North 15 April 1953 Sir Walter Smiles* Patricia Ford unopposed
Armagh 20 November 1954 James Harden Christopher Armstrong unopposed

Since 1955 General Election - 3 By Elections in Northern Ireland
Ulster Mid 11 August 1955 Thomas Mitchell Thomas Mitchell 50.67%
Ulster Mid 8 May 1956 Charles Beattie George Forrest 48.36%
Belfast East 19 March 1959 Alan McKibbin* Stanley McMaster 57.78%

Since 1966 General Election - 1 By Election in Northern Ireland
Ulster Mid 17 April 1969 George Forrest* Bernadette Devlin 50.67%

Since 1979 General Election - 3 By Elections in Northern Ireland
Fermanagh & Tyrone South 9 April 1981 M Frank Maguire* Robert Sands
Fermanagh & Tyrone South 20 August 1981 Robert Sands* O Carron
Belfast South 4 March 1982 Rev R J Bradford* Rev Martin Smyth

Since 1983 General Election - 15 By Elections in Northern Ireland
Antrim East 23 January 1986 Roy Beggs Roy Beggs
Antrim North 23 January 1986 Rev Ian Paisley Rev Ian Paisley
Antrim South 23 January 1986 Clifford Forsythe Clifford Forsythe
Belfast East 23 January 1986 Peter Robinson Peter Robinson
Belfast North 23 January 1986 Cecil Walker Cecil Walker
Belfast South 23 January 1986 Rev Martin Smyth Rev Martin Smyth
Down North 23 January 1986 James Kilfedder James Kilfedder
Down South 23 January 1986 Enoch Powell Enoch Powell
Londonderry East 23 January 1986 William Ross William Ross
Fermanagh & Tyrone South 23 January 1986 Ken Maginnis Ken Maginnis
Lagan Valley 23 January 1986 James Molyneaux James Molyneaux
Newry & Armagh 23 January 1986 James Nicholson Seamus Mallon
Strangford 23 January 1986 John Taylor John Taylor
Ulster Mid 23 January 1986 Rev William McCrea Rev William McCrea
Upper Bann 23 January 1986 Harold McCusker Harold McCusker

Since 1987 General Election - 1 By Election in Northern Ireland
Upper Bann 17 May 1990 Harold McCusker* David Trimble 57.97

Since 1992 General Election - 1 By Election in Northern Ireland
Down North 15 June 1995 James Kilfedder* Robert McCartney 36.97

Since 1997 General Election - 1 By Election in Northern Ireland
Antrim South 21 September 2000 Clifford Forsythe* Rev Dr William McCrea 37.95

Since 2010 General Election - 2 By Election in Northern Ireland
Belfast West 6 June 2011 Gerry Adams Paul Maskey 70.63%
Ulster Mid 7 March 2013 Martin McGuinness Francie Molloy 46.93%

*By Election caused by
death of MP

Not subsequently
re-elected: 22
 

Since 2017 General Election - 1 By Election in Northern Ireland
Tyrone West 3 May 2018 Barry McElduff Orfhlaith Begley 46.66%
 
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