Boundary set for Northern Ireland (13 April 2010 - 30 May 2024) Majorities

Constituency area Election type Polling date Winning party Majority Valid vote count Majority / valid vote count
Belfast East General election 6 May 2010 APNI 1,533 34,488 4.4%
Belfast East General election 7 May 2015 DUP 2,597 39,682 6.5%
Belfast East General election 8 June 2017 DUP 8,474 42,890 19.8%
Belfast East General election 12 December 2019 DUP 1,819 42,445 4.3%
Belfast North General election 6 May 2010 DUP 2,224 36,993 6.0%
Belfast North General election 7 May 2015 DUP 5,326 40,593 13.1%
Belfast North General election 8 June 2017 DUP 2,081 45,936 4.5%
Belfast North General election 12 December 2019 SF 1,943 49,037 4.0%
Belfast South General election 6 May 2010 SDLP 5,926 34,186 17.3%
Belfast South General election 7 May 2015 SDLP 906 38,957 2.3%
Belfast South General election 8 June 2017 DUP 1,996 43,705 4.6%
Belfast South General election 12 December 2019 SDLP 15,401 47,352 32.5%
Belfast West General election 6 May 2010 SF 17,579 32,133 54.7%
Belfast West General election 7 May 2015 SF 12,365 35,329 35.0%
Belfast West General election 8 June 2017 SF 21,652 40,633 53.3%
Belfast West General election 12 December 2019 SF 14,672 38,782 37.8%
East Antrim General election 6 May 2010 DUP 6,770 30,502 22.2%
East Antrim General election 7 May 2015 DUP 5,795 33,497 17.3%
East Antrim General election 8 June 2017 DUP 15,923 38,143 41.7%
East Antrim General election 12 December 2019 DUP 6,706 37,261 18.0%
East Londonderry General election 6 May 2010 DUP 5,355 34,950 15.3%
East Londonderry General election 7 May 2015 DUP 7,804 34,714 22.5%
East Londonderry General election 8 June 2017 DUP 8,842 41,030 21.6%
East Londonderry General election 12 December 2019 DUP 9,607 39,302 24.4%
Fermanagh and South Tyrone General election 6 May 2010 SF 4 46,803 0.0%
Fermanagh and South Tyrone General election 7 May 2015 UUP 530 50,864 1.0%
Fermanagh and South Tyrone General election 8 June 2017 SF 875 53,481 1.6%
Fermanagh and South Tyrone General election 12 December 2019 SF 57 50,762 0.1%
Foyle General election 6 May 2010 SDLP 4,824 37,889 12.7%
Foyle General election 7 May 2015 SDLP 6,046 37,002 16.3%
Foyle General election 8 June 2017 SF 169 45,965 0.4%
Foyle General election 12 December 2019 SDLP 17,110 47,144 36.3%
Lagan Valley General election 6 May 2010 DUP 10,486 36,540 28.7%
Lagan Valley General election 7 May 2015 DUP 13,000 39,795 32.7%
Lagan Valley General election 8 June 2017 DUP 19,229 44,926 42.8%
Lagan Valley General election 12 December 2019 DUP 6,499 45,405 14.3%
Mid Ulster General election 6 May 2010 SF 15,363 40,842 37.6%
Mid Ulster General election 7 May 2015 SF 13,617 40,922 33.3%
Mid Ulster General election 8 June 2017 SF 12,890 46,694 27.6%
Mid Ulster General election 12 December 2019 SF 9,537 44,620 21.4%
Newry and Armagh General election 6 May 2010 SF 8,331 44,906 18.6%
Newry and Armagh General election 7 May 2015 SF 4,176 49,877 8.4%
Newry and Armagh General election 8 June 2017 SF 12,489 53,579 23.3%
Newry and Armagh General election 12 December 2019 SF 9,287 50,779 18.3%
North Antrim General election 6 May 2010 DUP 12,558 42,397 29.6%
North Antrim General election 7 May 2015 DUP 11,546 41,907 27.6%
North Antrim General election 8 June 2017 DUP 20,643 48,460 42.6%
North Antrim General election 12 December 2019 DUP 12,721 44,051 28.9%
North Down General election 6 May 2010 Ind 14,364 33,481 42.9%
North Down General election 7 May 2015 Ind 9,202 35,947 25.6%
North Down General election 8 June 2017 Ind 1,208 39,185 3.1%
North Down General election 12 December 2019 APNI 2,968 40,643 7.3%
South Antrim General election 6 May 2010 DUP 1,183 34,009 3.5%
South Antrim General election 7 May 2015 UUP 949 36,523 2.6%
South Antrim General election 8 June 2017 DUP 3,208 43,170 7.4%
South Antrim General election 12 December 2019 DUP 2,689 42,974 6.3%
South Down General election 6 May 2010 SDLP 8,412 42,589 19.8%
South Down General election 7 May 2015 SDLP 5,891 42,697 13.8%
South Down General election 8 June 2017 SF 2,446 50,893 4.8%
South Down General election 12 December 2019 SF 1,620 49,762 3.3%
Strangford General election 6 May 2010 DUP 5,876 32,505 18.1%
Strangford General election 7 May 2015 DUP 10,185 33,924 30.0%
Strangford General election 8 June 2017 DUP 18,343 38,749 47.3%
Strangford General election 12 December 2019 DUP 7,071 37,485 18.9%
Upper Bann General election 6 May 2010 DUP 3,361 41,383 8.1%
Upper Bann General election 7 May 2015 DUP 2,264 47,219 4.8%
Upper Bann General election 8 June 2017 DUP 7,992 51,258 15.6%
Upper Bann General election 12 December 2019 DUP 8,210 50,045 16.4%
West Tyrone General election 6 May 2010 SF 10,685 37,275 28.7%
West Tyrone General election 7 May 2015 SF 10,060 38,654 26.0%
West Tyrone General election 8 June 2017 SF 10,342 43,486 23.8%
West Tyrone General election 12 December 2019 SF 7,478 41,186 18.2%