Editing Sinn Féin (section)

==Election results==
{{See also|Sinn Féin election results|Sinn Féin Westminster election results}}
=== Northern Ireland ===
==== Devolved legislature elections ====
{|class="wikitable" style="font-size:97%; text-align:center;"
|-
! Election
! Leader
! Body
! Votes
! %
! Seats
! +/–
! Position
! Status
|-
! [[1921 Northern Ireland general election|1921]]
| [[Éamon de Valera]]
| [[House of Commons of Northern Ireland|House of Commons]]
| 104,917
| 20.5
| {{Composition bar|6|52|hex={{party color|Sinn Féin}}}}
| {{increase}} 6
| {{increase}} 2nd
| {{shade|color=blue|50|Abstention}}
|-
! [[1982 Northern Ireland Assembly election|1982]]
| [[Ruairí Ó Brádaigh]]
| [[Northern Ireland Assembly (1982)|Assembly]]
| 64,191
| 10.1
| {{Composition bar|5|78|hex={{party color|Sinn Féin}}}}
| {{increase}} 5
| {{increase}} 5th
| {{shade|color=blue|50|Abstention}}
|-
! [[Northern Ireland Forum|1996]]
| rowspan="7" | [[Gerry Adams]]
| [[Members of the Northern Ireland Forum|Forum]]
| 116,377
| 15.5
| {{Composition bar|17|110|hex={{party color|Sinn Féin}}}}
| {{increase}} 17
| {{increase}} 4th
| {{shade|color=blue|50|Abstention}}
|-
! [[1998 Northern Ireland Assembly election|1998]]
| rowspan="7" | [[Northern Ireland Assembly|Assembly]]
| 142,858
| 17.7
| {{Composition bar|18|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 18
| {{increase}} 4th
| {{yes2|Coalition}}
|-
! [[2003 Northern Ireland Assembly election|2003]]
| 162,758
| 23.5
| {{Composition bar|24|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 6
| {{increase}} 3rd
| {{no result|Direct rule}}
|-
! [[2007 Northern Ireland Assembly election|2007]]
| 180,573
| 26.2
| {{Composition bar|28|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 4
| {{increase}} 2nd
| {{yes2|Coalition}}
|-
! [[2011 Northern Ireland Assembly election|2011]]
| 178,224
| 26.3
| {{Composition bar|29|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{steady}} 2nd
| {{yes2|Coalition}}
|-
! [[2016 Northern Ireland Assembly election|2016]]
| 166,785
| 24.0
| {{Composition bar|28|108|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{steady}} 2nd
| {{yes2|Coalition}}
|-
! [[2017 Northern Ireland Assembly election|2017]]
| 224,245
| 27.9
| {{Composition bar|27|90|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{steady}} 2nd
| {{yes2|Coalition}}
|-
! [[2022 Northern Ireland Assembly election|2022]]
| [[Mary Lou McDonald]]
| 250,388
| 29.0
| {{Composition bar|27|90|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{increase}} 1st
| {{yes2|Coalition}}
|}

====Westminster elections====
{|class="wikitable" style="font-size:97%; text-align:center;"
|-
! rowspan=2 | Election
! rowspan=2 | Leader
! rowspan=2 | Votes
! colspan=2 | %
! rowspan=2 | Seats<br/>{{abbr|(NI)|Northern Ireland}}
! rowspan=2 | +/–
! rowspan=2 | Position
! rowspan=2 | Status
|-
! {{abbr|NI|Northern Ireland}}
! {{abbr|UK|United Kingdom}}
|-
! [[1924 United Kingdom general election|1924]]
| [[Éamon de Valera]]
| 34,181
| rowspan=4|
| 0.2
| {{Composition bar|0|13|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{increase}} 9th
| {{N/A|No seats}}
|-
! [[1950 United Kingdom general election|1950]]
| [[Margaret Buckley]]
| 23,362
| 0.1
| {{Composition bar|0|12|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{decrease}} 11th
| {{N/A|No seats}}
|-
! [[1955 United Kingdom general election|1955]]
| rowspan="2" | [[Paddy McLogan]]
| 152,310
| 0.6
| {{Composition bar|2|12|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{increase}} 4th
| {{shade|color=blue|50|Abstention}}
|-
! [[1959 United Kingdom general election|1959]]
| 63,415
| 0.2
| {{Composition bar|0|12|hex={{party color|Sinn Féin}}}}
| {{decrease}} 2
| {{decrease}} 5th
| {{N/A|No seats}}
|-
! [[1983 United Kingdom general election|1983]]
| [[Ruairí Ó Brádaigh]]
| 102,701
| 13.4
| 0.3
| {{Composition bar|1|17|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{increase}} 8th
| {{shade|color=blue|50|Abstention}}
|-
! [[1987 United Kingdom general election|1987]]
| rowspan="8" |[[Gerry Adams]]
| 83,389
| 11.4
| 0.3
| {{Composition bar|1|17|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{increase}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[1992 United Kingdom general election|1992]]
| 78,291
| 10.0
| 0.2
| {{Composition bar|0|17|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{decrease}} 11th
| {{N/A|No seats}}
|-
! [[1997 United Kingdom general election|1997]]
| 126,921
| 16.1
| 0.4
| {{Composition bar|2|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{increase}} 8th
| {{shade|color=blue|50|Abstention}}
|-
! [[2001 United Kingdom general election|2001]]
| 175,933
| 21.7
| 0.7
| {{Composition bar|4|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{increase}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2005 United Kingdom general election|2005]]
| 174,530
| 24.3
| 0.6
| {{Composition bar|5|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2010 United Kingdom general election|2010]]
| 171,942
| 25.5
| 0.6
| {{Composition bar|5|18|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2015 United Kingdom general election|2015]]
| 176,232
| 24.5
| 0.6
| {{Composition bar|4|18|hex={{party color|Sinn Féin}}}}
| {{decrease}}  1
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2017 United Kingdom general election|2017]]
| 238,915
| 29.4
| 0.7
| {{Composition bar|7|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 3
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2019 United Kingdom general election|2019]]
| rowspan="2" |[[Mary Lou McDonald]]
| 181,853
| 22.8
| 0.6
| {{Composition bar|7|18|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2024 United Kingdom general election|2024]]
| 210,891
| 27.0
| 0.7
| {{Composition bar|7|18|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{up}} 5th
| {{shade|color=blue|50|Abstention}}
|}

====Trends====
{{original research section|date=February 2020}}
Sinn Féin returned to Northern Ireland elections at the [[1982 Northern Ireland Assembly election|1982 Assembly elections]], winning five seats with 64,191 votes (10.1%). The party narrowly missed winning additional seats in [[Belfast North (Assembly constituency)|Belfast North]] and [[Fermanagh and South Tyrone (UK Parliament constituency)|Fermanagh and South Tyrone]]. In the 1983 UK general election eight months later, Sinn Féin increased its support, breaking the six-figure vote barrier in Northern Ireland for the first time by polling 102,701 votes (13.4%).<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw83.htm |title=Westminster election 1983 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20020330194837/http://www.ark.ac.uk/elections/fw83.htm |archive-date=30 March 2002 |url-status=live}}</ref> Gerry Adams won the Belfast West constituency, and Danny Morrison fell only 78 votes short of victory in [[Mid Ulster (UK Parliament constituency)|Mid Ulster]].

The [[1984 European Parliament election in the United Kingdom|1984 European elections]] proved to be a disappointment, with Sinn Féin's candidate Danny Morrison polling 91,476 (13.3%) and falling well behind the SDLP candidate [[John Hume]].

By the beginning of 1985, Sinn Féin had won its first representation on local councils, owing to three by-election wins in Omagh (Seamus Kerr, May 1983) and Belfast (Alex Maskey in June 1983 and [[Belfast Area F#1984 by-election|Sean McKnight in March 1984]]). Three sitting councillors also defected to Sinn Féin in Dungannon, Fermanagh and Derry (the last defecting from the SDLP).<ref>The three were S. Cassidy (Dungannon), J. J. McCusker (Fermanagh) and W. McCartney (Derry).</ref><ref>{{cite web |url=http://www.ark.ac.uk/elections/flg81.htm |title=Local Government Elections 1981 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20090402043019/http://www.ark.ac.uk/elections/flg81.htm |archive-date=2 April 2009 |url-status=live}}</ref><ref name="1985 local election results">{{cite web |url=http://www.ark.ac.uk/elections/flg85.htm |title=Local Government Elections 1985 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20100413182605/http://www.ark.ac.uk/elections/flg85.htm |archive-date=13 April 2010 |url-status=live}}</ref> Sinn Féin succeeded in winning 59 seats in the [[1985 Northern Ireland local elections|1985 local government elections]], after it had predicted winning only 40 seats. However, the results continued to show a decline from the peak of 1983, as the party won 75,686 votes (11.8%).<ref name="1985 local election results" /> The party failed to gain any seats in the [[1986 Northern Ireland by-elections|1986 by-elections]] caused by the resignation of unionist MPs in protest at the [[Anglo-Irish Agreement]]. While this was partly due to an electoral pact between unionist candidates, the SF vote fell in the four constituencies they contested.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw86.htm |title=Westminster by-elections 1986 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20161228122705/http://www.ark.ac.uk/elections/fw86.htm |archive-date=28 December 2016 |url-status=live}}</ref>

In the [[1987 United Kingdom general election|1987 general election]], Gerry Adams held his Belfast West seat, but the party failed to make breakthroughs elsewhere and overall polled 83,389 votes (11.4%).<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw87.htm |title=Westminster election 1987 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20020425125808/http://www.ark.ac.uk/elections/fw87.htm |archive-date=25 April 2002 |url-status=live}}</ref> The same year saw the party contest the Dáil election in the Republic of Ireland; however, it failed to win any seats and polled less than 2%.

The [[1989 Northern Ireland local elections|1989 local government elections]] saw a drop in support for Sinn Féin.<ref>{{cite web |url=http://www.ark.ac.uk/elections/flg89.htm |title=Local Government Elections 1989 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20031207133631/http://www.ark.ac.uk/elections/flg89.htm |archive-date=7 December 2003 |url-status=live}}</ref> Defending 58 seats (the 59 won in 1985, plus two 1987 by-election gains in West Belfast, minus three councillors who had defected to Republican Sinn Féin in 1986), the party lost 15 seats. In the aftermath of the election, Mitchell McLaughlin admitted that recent IRA activity had affected the Sinn Féin vote.<ref>quoted in Gordon Lucy, The Northern Ireland Local Government Elections of 1993, Ulster Society Press.</ref>

In the [[1989 European Parliament election in the United Kingdom|1989 European election]], Danny Morrison again failed to win a seat, polling at 48,914 votes (9%).

The nadir for SF in this period came in 1992, with Gerry Adams losing his Belfast West seat to the SDLP, and the SF vote falling in the other constituencies that they had contested relative to 1987.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw92.htm |title=Westminster election 1992 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20020330205251/http://www.ark.ac.uk/elections/fw92.htm |archive-date=30 March 2002 |url-status=live}}</ref>

In the [[1997 United Kingdom general election|1997 UK general election]], Adams regained Belfast West. [[Martin McGuinness]] also won a seat in [[Mid Ulster (UK Parliament constituency)|Mid Ulster]]. In the [[1997 Irish general election|Irish general election the same year]] the party won its first seat since [[1957 Irish general election|1957]], with [[Caoimhghín Ó Caoláin]] gaining a seat in the [[Cavan–Monaghan (Dáil constituency)|Cavan–Monaghan]] constituency. In the [[1999 Irish local elections|Irish local elections of 1999]] the party increased its number of councillors from 7 to 23.

The party overtook its nationalist rival, the Social Democratic and Labour Party, as the largest nationalist party in the [[2001 Northern Ireland local elections|local elections]] and [[United Kingdom general election, 2001 (Northern Ireland)|UK general election]] of 2001, winning four Westminster seats to the SDLP's three.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw01.htm |title=The 2001 Westminster elections in Northern Ireland |publisher=Ark.ac.uk |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20081203232122/http://www.ark.ac.uk/elections/fw01.htm |archive-date=3 December 2008 |url-status=live}}</ref> The party continues to subscribe, however, to an [[abstentionism|abstentionist]] policy towards the Westminster British parliament, on account of opposing that parliament's jurisdiction in Northern Ireland, as well as its oath to the King.<ref>{{cite web |url=http://www.parliament.uk/about/how/elections-and-voting/swearingin/ |title=Swearing in and the parliamentary oath |publisher=parliament.uk |access-date=14 May 2013 |archive-url=https://web.archive.org/web/20130705150737/http://www.parliament.uk/about/how/elections-and-voting/swearingin/ |archive-date=5 July 2013 |url-status=live}}</ref><ref>{{cite web |title=Sinn Féin press release |url=http://www.sinnfein.org/releases/01/pr011812d.html |publisher=Sinn Féin |date=18 December 2001 |access-date=16 August 2008 |archive-url=https://web.archive.org/web/20090518010357/http://www.sinnfein.org/releases/01/pr011812d.html |archive-date=18 May 2009 |url-status=live}}</ref>
[[File:Northern Ireland election seats 1997-2019.svg|thumb|right|300px|Results in Northern Ireland from UK general elections. Sinn Féin increased its number of seats from two in 1997 to five in 2005, four of them in the west. It retained its five seats in 2010, was reduced to four in 2015 before increasing to seven in 2017.]]

Sinn Féin increased its share of the nationalist vote in the [[2003 Northern Ireland Assembly election|2003]], [[2007 Northern Ireland Assembly election|2007]], and [[2011 Northern Ireland Assembly election|2011 Assembly elections]], with [[Martin McGuinness]], former Minister for Education, taking the post of [[Deputy First Minister of Northern Ireland|deputy First Minister]] in the Northern Ireland power-sharing Executive Committee. The party has three ministers in the Executive.

In the [[2010 United Kingdom general election in Northern Ireland|2010 general election]], the party retained its five seats,<ref name="BBCE">{{cite news |author=Political Party Seats Change Democratic Unionist Party |url=http://news.bbc.co.uk/2/shared/election2010/results/region/6.stm |title=Northern Ireland General election results 2010 |work=BBC News |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20101221000149/http://news.bbc.co.uk/2/shared/election2010/results/region/6.stm |archive-date=21 December 2010 |url-status=live}}</ref> and for the first time topped the poll at a Westminster election in Northern Ireland, winning 25.5% of the vote.<ref name=ARK>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw10.htm |title=The 2010 Westminster elections in Northern Ireland |publisher=Ark.ac.uk |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20170601144216/http://www.ark.ac.uk/elections/fw10.htm |archive-date=1 June 2017 |url-status=live}}</ref> All Sinn Féin MPs increased their share of the vote and with the exception of [[Fermanagh and South Tyrone (UK Parliament constituency)|Fermanagh and South Tyrone]], increased their majorities.<ref name="BBCE" /> In Fermanagh and South Tyrone, [[Ulster Unionism#Unionism in Northern Ireland today|Unionist]] parties agreed a joint candidate,<ref>{{cite news |url=http://news.bbc.co.uk/2/hi/uk_news/politics/election_2010/northern_ireland/8610725.stm |title=Unionist 'unity' candidate agreed |work=BBC News |date=9 April 2010 |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20100429145310/http://news.bbc.co.uk/2/hi/uk_news/politics/election_2010/northern_ireland/8610725.stm |archive-date=29 April 2010 |url-status=live}}</ref> this resulted in the closest contest of the election, with Sinn Féin MP [[Michelle Gildernew]] holding her seat by 4 votes after 3 recounts and an election petition challenging the result.<ref>{{cite web |url=http://www.belfasttelegraph.co.uk/news/politics/election/sinn-feins-michelle-gildernew-retains-fermanagh-after-dramatic-recounts-14799949.html |archive-url=https://archive.today/20120720082124/http://www.belfasttelegraph.co.uk/news/politics/election/sinn-feins-michelle-gildernew-retains-fermanagh-after-dramatic-recounts-14799949.html |url-status=dead |archive-date=20 July 2012 |title=Sinn Fein's Michelle Gildernew retains Fermanagh after dramatic recounts |publisher=Belfasttelegraph.co.uk |date=7 May 2010 |access-date=1 January 2011}}</ref>

Sinn Féin lost some ground in the [[2016 Northern Ireland Assembly election|2016 Assembly election]], dropping one seat to finish with 28, ten behind the DUP.<ref>{{cite news |last1=Moriarty |first1=Gerry |title=Assembly elections: DUP and Sinn Féin remain dominant |url=http://www.irishtimes.com/news/politics/assembly-elections-dup-and-sinn-f%C3%A9in-remain-dominant-1.2639747 |access-date=4 March 2017 |date=7 May 2016 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |archive-url=https://web.archive.org/web/20170305113449/http://www.irishtimes.com/news/politics/assembly-elections-dup-and-sinn-f%C3%A9in-remain-dominant-1.2639747 |archive-date=5 March 2017 |url-status=live}}</ref> In the [[2017 Northern Ireland Assembly election|snap election]] eight months later caused by the resignation of McGuinness as deputy First Minister, however, the party surged, winning 27.9% of the popular vote to 28.1% for the DUP, and 27 seats to the DUP's 28 in an Assembly reduced by 18 seats.<ref>{{cite news |last1=Gray |first1=Dean |title=Sinn Féin closes gap on unionist rivals as middle ground collapses |url=http://www.independent.ie/irish-news/politics/sinn-fin-closes-gap-on-unionist-rivals-as-middle-ground-collapses-35500890.html |access-date=4 March 2017 |work=Irish Independent |date=4 March 2017 |archive-url=https://web.archive.org/web/20170304054107/http://www.independent.ie/irish-news/politics/sinn-fin-closes-gap-on-unionist-rivals-as-middle-ground-collapses-35500890.html |archive-date=4 March 2017 |url-status=live}}</ref><ref>{{cite news |title=Efforts to form a power-sharing administration to begin early next week |url=https://www.rte.ie/news/2017/0303/856841-northern-irelands-assembly-election/ |access-date=4 March 2017 |work=RTÉ |date=4 March 2017 |archive-url=https://web.archive.org/web/20170303071650/http://www.rte.ie/news/2017/0303/856841-northern-irelands-assembly-election/ |archive-date=3 March 2017 |url-status=live}}</ref> The withdrawal of the DUP party whip from [[Jim Wells (politician)|Jim Wells]] in May 2018 meant that Sinn Féin became the joint-largest party in the Assembly alongside the DUP, with 27 seats each.<ref>{{cite news |last1=Cross |first1=Gareth |title=It's a tie: DUP's Wells says removal of whip gives Sinn Fein equal voting power in Northern Ireland |url=https://www.belfasttelegraph.co.uk/news/politics/its-a-tie-dups-wells-says-removal-of-whip-gives-sinn-fein-equal-voting-power-in-northern-ireland-36893228.html |access-date=30 July 2018 |work=Belfast Telegraph |date=10 May 2018 |archive-url=https://web.archive.org/web/20180730140441/https://www.belfasttelegraph.co.uk/news/politics/its-a-tie-dups-wells-says-removal-of-whip-gives-sinn-fein-equal-voting-power-in-northern-ireland-36893228.html |archive-date=30 July 2018 |url-status=live}}</ref>

===Republic of Ireland===
====Dáil Éireann elections====
{|class="wikitable" style="font-size:97%; text-align:center;"
|-
! Election
! Leader
! 1st pref. <br />votes
! %
! Seats
! ±
! {{abbr|Pos.|Position}}
! Status
|-
! [[1918 Irish general election|1918]]<br />{{small|(Westminster)}}
| rowspan="2"| [[Éamon de Valera]]
| 476,087
| 46.9
| {{Composition bar|73|105|hex={{party color|Sinn Féin}}}}
| {{increase}} 73
| {{increase}} 1st
| style="text-align:center;" rowspan="2"| Declaration of <br />[[Irish Republic]]
|-
! [[1921 Irish elections|1921]]<br />{{small|(HoC S. Ireland)}}
| colspan="2" style="background:lightgrey;"|
| {{Composition bar|124|128|hex={{party color|Sinn Féin}}}}<small>(elected unopposed)</small>
| {{increase}} 51
| style="background:lightgrey;"|
|-
! rowspan=2|[[1922 Irish general election|1922]]
| [[Michael Collins (Irish leader)|Michael Collins]]<br />{{small|(Pro-Treaty)}}
| 239,195
| 38.5
| {{Composition bar|58|128|hex={{party color|Sinn Féin}}}}
| style="background:lightgrey;"|
| {{increase}} 1st
| {{yes2|Minority}}
|-
| Éamon de Valera<br />{{small|(Anti-Treaty)}}
| 135,310
| 21.8
| {{Composition bar|36|128|hex={{party color|Sinn Féin}}}}
| style="background:lightgrey;"|
| {{decrease}} 2nd
| {{shade|color=blue|50|Abstention}}
|-
! [[1923 Irish general election|1923]]
| Éamon de Valera
| 288,794
| 27.4
| {{Composition bar|44|153|hex={{party color|Sinn Féin}}}}
| {{increase}} 8
| {{steady}} 2nd
| {{shade|color=blue|50|Abstention}}
|-
! [[June 1927 Irish general election|Jun 1927]]
| [[John J. O'Kelly]]
| 41,401
| 3.6
| {{Composition bar|5|153|hex={{party color|Sinn Féin}}}}
| {{decrease}} 39
| {{decrease}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[1954 Irish general election|1954]]
| [[Tomás Ó Dubhghaill]]
| 1,990
| 0.1
| {{Composition bar|0|147|hex={{party color|Sinn Féin}}}}
| {{steady}}
| {{steady}} 6th
| {{N/A|No seats}}
|-
! [[1957 Irish general election|1957]]
| rowspan="2"| [[Paddy McLogan]]
| 65,640
| 5.3
| {{Composition bar|4|147|hex={{party color|Sinn Féin}}}}
| {{increase}} 4
| {{increase}} 4th
| {{shade|color=blue|50|Abstention}}
|-
! [[1961 Irish general election|1961]]
| 36,396
| 3.1
| {{Composition bar|0|144|hex={{party color|Sinn Féin}}}}
| {{decrease}} 4
| {{steady}} 4th
| {{N/A|No seats}}
|-
! [[February 1982 Irish general election|Feb 1982]]
| [[Ruairí Ó Brádaigh]]
| 16,894
| 1.0
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{steady}}
| {{decrease}} 5th
| {{N/A|No seats}}
|-
! [[1987 Irish general election|1987]]
| rowspan="8"| [[Gerry Adams]]
| 32,933
| 1.9
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{steady}}
| {{decrease}} 6th
| {{N/A|No seats}}
|-
! [[1989 Irish general election|1989]]
| 20,003
| 1.2
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{steady}}
| {{steady}} 6th
| {{N/A|No seats}}
|-
! [[1992 Irish general election|1992]]
| 27,809
| 1.6
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{steady}}
| {{decrease}} 7th
| {{N/A|No seats}}
|-
! [[1997 Irish general election|1997]]
| 45,614
| 2.5
| {{Composition bar|1|166|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{steady}} 7th
| {{no2|Opposition}}
|-
! [[2002 Irish general election|2002]]
| 121,020
| 6.5
| {{Composition bar|5|166|hex={{party color|Sinn Féin}}}}
| {{increase}} 4
| {{increase}} 6th
| {{no2|Opposition}}
|-
! [[2007 Irish general election|2007]]
| 143,410
| 6.9
| {{Composition bar|4|166|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{increase}} 5th
| {{no2|Opposition}}
|-
! [[2011 Irish general election|2011]]
| 220,661
| 9.9
| {{Composition bar|14|166|hex={{party color|Sinn Féin}}}}
| {{increase}} 10
| {{increase}} 4th
| {{no2|Opposition}}
|-
! [[2016 Irish general election|2016]]
| 295,319
| 13.8
| {{Composition bar|23|158|hex={{party color|Sinn Féin}}}}
| {{increase}} 9
| {{increase}} 3rd
| {{no2|Opposition}}
|-
! [[2020 Irish general election|2020]]
| rowspan=2 | [[Mary Lou McDonald]]
| 535,595
| 24.5
| {{Composition bar|37|160|hex={{party color|Sinn Féin}}}}
| {{increase}} 14
| {{increase}} 2nd
| {{no2|Opposition}}
|-
! [[2024 Irish general election|2024]]
| 418,627
| 19.0
| {{Composition bar|39|174|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{steady}} 2nd
| {{no2|Opposition}}
|}

The party had five TDs elected in the [[2002 Irish general election]], an increase of four from the previous election. At the [[2007 Irish general election|general election in 2007]] the party had expectations of substantial gains,<ref>{{cite web |url=http://www.sinnfein.ie/contents/9022 |title=Sinn Féin up and running for General Election |publisher=Sinn Fein |date=29 April 2007  |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20100504183645/http://www.sinnfein.ie/contents/9022 |archive-date=4 May 2010 |url-status=dead}}</ref><ref>{{cite news |url=http://www.anphoblacht.com/news/detail/18472 |title=Dáil General Election Profile : Councillor Gerry Murray, Mayo |date=29 March 2007 |newspaper=[[An Phoblacht]] |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20120229170005/http://www.anphoblacht.com/news/detail/18472 |archive-date=29 February 2012 |url-status=dead}}</ref> with poll predictions that they would gain five<ref>{{cite news |url=https://www.telegraph.co.uk/news/uknews/1552197/Sinn-Fein-looks-to-coalition-with-Republic.html |title=Sinn Fein looks to coalition with Republic |first=Tom |last=Peterkin |date=21 May 2007 |access-date=20 April 2010 |newspaper=[[Daily Telegraph]] |location=London |archive-url=https://web.archive.org/web/20111212024853/http://www.telegraph.co.uk/news/uknews/1552197/Sinn-Fein-looks-to-coalition-with-Republic.html |archive-date=12 December 2011 |url-status=live}}</ref> to ten seats.<ref>{{cite news |first=Henry |last=McDonald |url=https://www.theguardian.com/world/2007/may/27/ireland2 |title=Sinn Fein's hopes dashed in Irish elections |date=27 May 2007 |newspaper=[[The Observer]] |location=London |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20130831080210/http://www.theguardian.com/world/2007/may/27/ireland2 |archive-date=31 August 2013 |url-status=live}}</ref> However, the party lost one of its seats to [[Fine Gael]]. [[Seán Crowe]], who had topped the poll in [[Dublin South-West (Dáil constituency)|Dublin South-West]] fell to fifth place, with his first preference vote reduced from 20.28% to 12.16%.<ref name=2007results>{{cite news |title=Results 2007 |newspaper=[[The Irish Times]] |date=28 May 2007}}</ref>

On 26 November 2010, [[Pearse Doherty]] won a seat in the [[2010 Donegal South-West by-election|Donegal South-West by-election]]. It was the party's first by-election victory in the [[Republic of Ireland]] since 1925.<ref>{{cite web |url=http://www.belfasttelegraph.co.uk/news/local-national/republic-of-ireland/sinn-fein-wins-by-landslide-in-donegal-southwest-byelection-15015148.html |archive-url=https://archive.today/20120719235813/http://www.belfasttelegraph.co.uk/news/local-national/republic-of-ireland/sinn-fein-wins-by-landslide-in-donegal-southwest-byelection-15015148.html |url-status=dead |archive-date=19 July 2012 |title=Sinn Fein wins by landslide in Donegal South-West by-election |date=27 November 2010|newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=1 January 2011}}</ref> After negotiations with the left-wing Independent TDs [[Finian McGrath]] and [[Maureen O'Sullivan (politician)|Maureen O'Sullivan]], a [[Technical Group]] was formed in the Dáil to give its members more speaking time.<ref>{{cite news |url=http://www.irishtimes.com/newspaper/breaking/2010/1210/breaking53.html |title=SF forms Dail Technical Group |first=Stephen |last=Collins |date=10 December 2010 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=13 January 2011 |archive-url=https://web.archive.org/web/20110313134618/http://www.irishtimes.com/newspaper/breaking/2010/1210/breaking53.html |archive-date=13 March 2011 |url-status=live}}</ref><ref>{{cite news |url=http://www.rte.ie/news/2010/1126/donegal.html |title=Pearse Doherty elected in Donegal South–West |work=[[RTÉ News]] |location=Dublin |date=26 November 2010 |access-date=13 January 2011 |archive-url=https://web.archive.org/web/20110101092530/http://www.rte.ie/news/2010/1126/donegal.html |archive-date=1 January 2011 |url-status=live}}</ref>

In the [[2011 Irish general election]] the party made significant gains. All its sitting TDs were returned, with Seán Crowe regaining the seat he had lost in 2007 in Dublin South-West. In addition to winning long-targeted seats such as [[Dublin Central (Dáil constituency)|Dublin Central]] and [[Dublin North-West (Dáil constituency)|Dublin North-West]], the party gained unexpected seats in [[Cork East (Dáil constituency)|Cork East]] and [[Sligo–North Leitrim (Dáil constituency)|Sligo–North Leitrim]].<ref name=IT1>{{cite news |url=http://www.irishtimes.com/newspaper/breaking/2011/0227/breaking2.html |title=Fine Gael poised to lead next government as FF collapses |first=Kilian |last=Doyle |date=27 February 2011 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |archive-url=https://web.archive.org/web/20111101114307/http://www.irishtimes.com/newspaper/breaking/2011/0227/breaking2.html |archive-date=1 November 2011 |url-status=live}}</ref> It ultimately won 14 seats, the best performance at the time for the party's current incarnation. The party went on to win three seats in the Seanad election which followed their success at the general election.{{sfn|Gallagher|Marsh|2011|pages=149, 250}} In the [[2016 Irish general election|2016 election]] it made further gains, finishing with 23 seats and overtaking the Labour Party as the third-largest party in the Dáil{{sfn|Gallagher|Marsh|2016|page=135}} It ran seven candidates in the Seanad election, all of whom were successful.{{sfn|Gallagher|Marsh|2016|page=239}}

The party achieved their greatest contemporary result in the [[2020 Irish general election]], topping the first-preference votes with 24.5% and winning 37 seats. Due to poor results in the 2019 local elections and elections to the European Parliament, the party ran only 42 candidates and did not compete in [[Cork North-West (Dáil constituency)|Cork North-West]]. The party achieved unexpected success in the early counting, with 27 candidates being elected on the first count.<ref>{{cite news |url=https://www.rte.ie/news/election-2020/results/ |title=General Election Results |work=[[RTÉ News]] |access-date=15 February 2020 |archive-date=13 February 2020 |archive-url=https://web.archive.org/web/20200213130309/https://www.rte.ie/news/election-2020/results/ |url-status=live}}</ref><ref>{{cite news |url=https://www.bbc.com/news/world-europe-51441410 |title=Fianna Fáil largest party but Sinn Féin celebrate |date=11 February 2020 |work=[[BBC News]] |access-date=15 February 2020 |language=en-GB |archive-date=14 February 2020 |archive-url=https://web.archive.org/web/20200214200429/https://www.bbc.com/news/world-europe-51441410 |url-status=live}}</ref> Party leader Mary Lou McDonald called the result a "revolution" and announced she would pursue the formation of a government including Sinn Féin.<ref>{{cite news |url=https://www.reuters.com/article/us-ireland-election-idUSKBN2030CJ |title=Irish nationalists Sinn Fein demand place in government after strong election showing |date=9 February 2020 |work=[[Reuters]] |access-date=15 February 2020 |language=en |archive-date=15 February 2020 |archive-url=https://web.archive.org/web/20200215020843/https://www.reuters.com/article/us-ireland-election-idUSKBN2030CJ |url-status=live}}</ref> Ultimately negotiations to form a new government led to Fianna Fáil, Fine Gael and the [[Green Party (Ireland)|Green Party]] agreeing to enter a majority [[32nd government of Ireland|coalition government]] in June. Sinn Féin pledged to be a strong opposition to the new coalition.<ref>{{cite news |url=https://www.belfasttelegraph.co.uk/news/republic-of-ireland/sinn-fein-pledges-to-lead-strong-opposition-as-parties-agree-to-enter-coalition-39319632.html |title=Sinn Fein pledges to lead strong opposition as parties agree to enter coalition |first=Aine |last=McMahon |agency=[[Press Association]] |date=26 June 2020 |newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=6 July 2020 |archive-date=6 July 2020 |archive-url=https://web.archive.org/web/20200706114137/https://www.belfasttelegraph.co.uk/news/republic-of-ireland/sinn-fein-pledges-to-lead-strong-opposition-as-parties-agree-to-enter-coalition-39319632.html |url-status=live}}</ref>

====Presidential elections====
{| class="wikitable" style="font-size:97%; text-align:center;"
! Election
! Candidate
! 1st pref. <br/>votes
! %
! +/–
! Position
|-
| [[2011 Irish presidential election|2011]]
| [[Martin McGuinness]]
| 243,030
| 13.7%
| —
| #3
|-
| [[2018 Irish presidential election|2018]]
| [[Liadh Ní Riada]]
| 93,987
| 6.4%
| {{Decrease}} 7.3
| #4
|}

====Local government elections====
{|class="wikitable sortable" style="text-align:center; font-size:95%"
|-
! Election
! Country
! First pref. <br/>vote
! Vote %
! Seats
|-
| [[1920 Irish local elections|1920]]
| Ireland
| –
| 27.0%
| –
|-
| [[1974 Irish local elections|1974]]
| [[Republic of Ireland]]
| –
| –
| align=left|{{Composition bar|7|802|hex={{party color|Sinn Féin}}}}
|-
| [[1979 Irish local elections|1979]]
| Republic of Ireland
| –
| –
| align=left|{{Composition bar|11|798|hex={{party color|Sinn Féin}}}}
|-
| [[1985 Northern Ireland local elections|1985]]
| [[Northern Ireland]]
| 75,686
| 11.8%
| align=left|{{Composition bar|59|565|hex={{party color|Sinn Féin}}}}
|-
| [[1985 Irish local elections|1985]]
| Republic of Ireland
| 46,391
| 3.3%
| –
|-
| [[1989 Northern Ireland local elections|1989]]
| Northern Ireland
| 69,032
| 11.2%
| align=left|{{Composition bar|43|565|hex={{party color|Sinn Féin}}}}
|-
| [[1991 Irish local elections|1991]]
| Republic of Ireland
| 29,054
| 2.1%
| align=left|{{Composition bar|8|883|hex={{party color|Sinn Féin}}}}
|-
| [[1993 Northern Ireland local elections|1993]]
| Northern Ireland
| 77,600
| 12.0%
| align=left|{{Composition bar|51|582|hex={{party color|Sinn Féin}}}}
|-
| [[1997 Northern Ireland local elections|1997]]
| Northern Ireland
| 106,934
| 17.0%
| align=left|{{Composition bar|74|575|hex={{party color|Sinn Féin}}}}
|-
| [[1999 Irish local elections|1999]]
| Republic of Ireland
| 49,192
| 3.5%
| align=left|{{Composition bar|21|883|hex={{party color|Sinn Féin}}}}
|-
| [[2001 Northern Ireland local elections|2001]]
| Northern Ireland
| 163,269
| 21.0%
| align=left|{{Composition bar|108|582|hex={{party color|Sinn Féin}}}}
|-
| [[2004 Irish local elections|2004]]
| Republic of Ireland
| 146,391
| 8.0%
| align=left|{{Composition bar|54|883|hex={{party color|Sinn Féin}}}}
|-
| [[2005 Northern Ireland local elections|2005]]
| Northern Ireland
| 163,205
| 23.2%
| align=left|{{Composition bar|126|582|hex={{party color|Sinn Féin}}}}
|-
| [[2009 Irish local elections|2009]]
| Republic of Ireland
| 138,405
| 7.4%
| align=left|{{Composition bar|54|883|hex={{party color|Sinn Féin}}}}
|-
| [[2011 Northern Ireland local elections|2011]]
| Northern Ireland
| 163,712
| 24.8%
| align=left|{{Composition bar|138|583|hex={{party color|Sinn Féin}}}}
|-
| [[2014 Northern Ireland local elections|2014]]
| Northern Ireland
| 151,137
| 24.1%
| align=left|{{Composition bar|105|462|hex={{party color|Sinn Féin}}}}
|-
| [[2014 Irish local elections|2014]]
| Republic of Ireland
| 258,650
| 15.2%
| align=left|{{Composition bar|159|949|hex={{party color|Sinn Féin}}}}
|-
| [[2019 Northern Ireland local elections|2019]]
| Northern Ireland
| 157,448
| 23.2%
| align=left|{{Composition bar|105|462|hex={{party color|Sinn Féin}}}}
|-
| [[2019 Irish local elections|2019]]
| Republic of Ireland
| 164,637
| 9.5%
| align=left|{{Composition bar|81|949|hex={{party color|Sinn Féin}}}}
|-
| [[2023 Northern Ireland local elections|2023]]
| Northern Ireland 
| 230,793
| 30.9%
|align=left|{{Composition bar|144|462|hex={{party color|Sinn Féin}}}}
|-
| [[2024 Irish local elections|2024]]
| Republic of Ireland
| 218,620
| 11.8%
| align=left|{{Composition bar|102|949|hex={{party color|Sinn Féin}}}}
|}
Sinn Féin is represented on most county and city councils. It made large gains in the [[2004 Irish local elections|local elections of 2004]], increasing its number of councillors from 21 to 54, and replacing the [[Progressive Democrats]] as the fourth-largest party in local government.<ref name=results2004>{{cite web |url=http://www.electionsireland.org/results/local/seatsummary.cfm?election=2004L |title=2004 Local Election: Seats per Party per Council |first1=Christopher|last1=Took|first2=Seán|last2=Donnelly|work=ElectionsIreland.org |access-date=10 November 2009 |archive-url=https://web.archive.org/web/20090624072527/http://electionsireland.org/results/local/seatsummary.cfm?election=2004L |archive-date=24 June 2009 |url-status=live}}</ref> At the [[2009 Irish local elections|local elections of June 2009]], the party's vote fell by 0.95% to 7.34%, with no change in the number of seats. Losses in Dublin and urban areas were balanced by gains in areas such as Limerick, Wicklow, Cork, Tipperary and Kilkenny and the border counties .<ref name=2009results>{{cite news |title=Elections 2009: How Ireland Voted |newspaper=[[The Irish Times]] |date=9 June 2009}}</ref> However, three of Sinn Féin's seven representatives on [[Dublin City Council]] resigned within six months of the June 2009 elections, one of them defecting to the [[Labour Party (Ireland)|Labour Party]].<ref>{{cite news |title=Defecting councillor says SF has become directionless in South |date=12 January 2010 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |url=http://www.irishtimes.com/newspaper/ireland/2010/0112/1224262117991.html |access-date=15 January 2010 |archive-url=https://web.archive.org/web/20101123110622/http://www.irishtimes.com/newspaper/ireland/2010/0112/1224262117991.html |archive-date=23 November 2010 |url-status=live}} Retrieved 15 January 2010.</ref>

===European Parliament elections===
In the [[2004 European Parliament election]], [[Bairbre de Brún]] won Sinn Féin's first seat in the European Parliament, at the expense of the SDLP. She came in second behind [[Jim Allister]] of the DUP.<ref>{{cite web |url=http://www.ark.ac.uk/elections/fe04.htm |title=The 2004 European Election |access-date=25 July 2015 |archive-url=https://web.archive.org/web/20070404234444/http://www.ark.ac.uk/elections/fe04.htm |archive-date=4 April 2007 |url-status=live}}</ref> In the [[2009 European Parliament election|2009 election]], de Brún was re-elected with 126,184 first preference votes, the only candidate to reach the quota on the first count. This was the first time since elections began in 1979 that the DUP failed to take the first seat, and was the first occasion Sinn Féin topped a poll in any Northern Ireland election.<ref>{{cite news |url=http://news.bbc.co.uk/1/hi/northern_ireland/8089501.stm |title=Sinn Fein tops poll in Euro count |work=BBC News |date=8 June 2009 |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20140518085201/http://news.bbc.co.uk/1/hi/northern_ireland/8089501.stm |archive-date=18 May 2014 |url-status=live}}</ref><ref>{{cite web |url=http://www.sinnfein.ie/contents/16580 |title=History made – Sinn Féin is now the largest party in the Six Counties |publisher=Sinnfein.ie |access-date=20 April 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100113123331/http://www.sinnfein.ie/contents/16580 |archive-date=13 January 2010}}</ref>

Sinn Féin made a breakthrough in the [[Dublin (European Parliament constituency)|Dublin constituency]] in [[2004 European Parliament election in Ireland|2004]]. The party's candidate, [[Mary Lou McDonald]], was elected on the sixth count as one of four MEPs for Dublin.<ref>{{cite web |url=http://www.electionsireland.org/result.cfm?election=2004E&cons=524 |title=European Election: June 2004 – Dublin |publisher=Electionsireland.org |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20090505203347/http://electionsireland.org/result.cfm?election=2004E&cons=524 |archive-date=5 May 2009 |url-status=live}}</ref> In the [[2009 European Parliament election in Ireland|2009 election]], when Dublin's representation was reduced to three MEPs, she failed to hold her seat.<ref name="Election Ireland results">{{cite web |url=http://www.electionsireland.org/result.cfm?election=2009E&cons=242 |title=2009 Euro – South First Preference Votes |publisher=ElectionsIreland.org |access-date=14 July 2011 |archive-url=https://web.archive.org/web/20110809203457/http://electionsireland.org/result.cfm?election=2009E&cons=242 |archive-date=9 August 2011 |url-status=live}}</ref> In the South constituency their candidate, Councillor [[Toiréasa Ferris]], managed to nearly double the number of first preference votes,<ref name="Election Ireland results" /> lying third after the first count, but failed to get enough transfers to win a seat. In the [[2014 European Parliament election|2014 election]], [[Martina Anderson]] topped the poll in [[Northern Ireland (European Parliament constituency)|Northern Ireland]], as did [[Lynn Boylan]] in [[Dublin (European Parliament constituency)|Dublin]]. [[Liadh Ní Riada]] was elected in the [[South (European Parliament constituency)|South]] constituency, and [[Matt Carthy]] in [[Midlands–North-West (European Parliament constituency)|Midlands–North-West]].<ref>{{cite news |url=http://www.rte.ie/news/2014/0527/619845-local-european-elections/ |title=Full recheck in Midlands-North-West constituency |date=28 May 2014 |work=[[RTÉ News]] |archive-url=https://web.archive.org/web/20140527214250/http://www.rte.ie/news/2014/0527/619845-local-european-elections/ |archive-date=27 May 2014 |url-status=live}}</ref> In the [[2019 European Parliament election|2019 election]], Carthy was re-elected, but Boylan and Ní Riada lost their seats. Anderson also held her Northern Ireland seat until early 2020 when her term was cut short by [[Brexit]].<ref>{{cite news |url=https://www.rte.ie/news/elections-2019/results/#/european/ |title=2019 European election results for Ireland |date=June 2019 |work=[[RTÉ News]] |archive-url=https://web.archive.org/web/20190609112915/https://www.rte.ie/news/elections-2019/results/#/european/ |archive-date=9 June 2019 |url-status=live}}</ref>

====Republic of Ireland====
{|class="wikitable" style=text-align:center; font-size:97%;"
! Election
! Leader
! 1st pref. <br />votes
! %
! Seats
! +/−
! EP group
|-
! [[1984 European Parliament election in Ireland|1984]]
| rowspan=7 | [[Gerry Adams]]
| 54,672
| 4.88 (#4)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| New
| rowspan="4" |−
|-
! [[1989 European Parliament election in Ireland|1989]]
| 35,923
| 2.20 (#8)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1994 European Parliament election in Ireland|1994]]
| 33,823
| 2.97 (#7)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1999 European Parliament election in Ireland|1999]]
| 88,165
| 6.33 (#5)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2004 European Parliament election in Ireland|2004]]
| 197,715
| 11.10 (#3)
| {{Composition bar|1|13|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| rowspan="3" |[[European United Left/Nordic Green Left|GUE/NGL]]
|-
! [[2009 European Parliament election in Ireland|2009]]
| 205,613
| 11.24 (#5)
| {{Composition bar|0|12|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
|-
! [[2014 European Parliament election in Ireland|2014]]
| 323,300
| 19.52 (#3)
| {{Composition bar|3|11|hex={{party color|Sinn Féin}}}}
| {{increase}} 3
|-
! [[2019 European Parliament election in Ireland|2019]]
| rowspan="2" |[[Mary Lou McDonald]]
| 196,001
| 11.68 (#3)
| {{Composition bar|1|13|hex={{party color|Sinn Féin}}}}
| {{decrease}} 2
| rowspan="2" |[[The Left in the European Parliament - GUE/NGL|The Left]]
|-
! [[2024 European Parliament election in Ireland|2024]]
| 194,403
| 11.14 (#3)
| {{Composition bar|2|14|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
|}

====Northern Ireland====
{|class="wikitable" style=text-align:center; font-size:97%;"
! Election
! Leader
! 1st pref. <br />votes
! %
! Seats
! +/−
! EP group
|-
! [[1984 European Parliament election in the United Kingdom#Northern Ireland|1984]]
| rowspan="2" | [[Danny Morrison (Irish republican)|Danny Morrison]]
| 91,476
| 13.35 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| New
| rowspan="4" |−
|-
! [[1989 European Parliament election in the United Kingdom#Northern Ireland|1989]]
| 48,914
| 9.15 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1994 European Parliament election in the United Kingdom#Northern Ireland|1994]]
| [[Tom Hartley (politician)|Tom Hartley]]
| 55,215
| 9.86 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1999 European Parliament election in the United Kingdom#Northern Ireland|1999]]
| [[Mitchel McLaughlin]]
| 117,643
| 17.33 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2004 European Parliament election in the United Kingdom#Northern Ireland|2004]]
| rowspan="2" | [[Bairbre de Brún]]
| 144,541
| 26.31 (#2)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| rowspan="3" |[[European United Left/Nordic Green Left|GUE/NGL]]
|-
! [[2009 European Parliament election in the United Kingdom#Northern Ireland|2009]]
| 126,184
| 25.81 (#1)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2014 European Parliament election in the United Kingdom|2014]]
| rowspan="2" | [[Martina Anderson]]
| 159,813
| 25.52 (#1)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2019 European Parliament election in the United Kingdom|2019]]
| 126,951
| 22.17 (#1)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
| [[The Left in the European Parliament - GUE/NGL|The Left]]
|-
|}