Sources: Northern Ireland

9 sources. A working link shows that a source is available; it is not proof that the source supports a claim — that is checked by editorial evidence review.

• Reference work · Independent publication

  1998 Northern Ireland Good Friday Agreement referendum (Wikipedia) link

  Gives the exact 22 May 1998 referendum result in Northern Ireland and the simultaneous referendum in the Republic of Ireland.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998, Northern Ireland: constitutional status and the border poll question · Source record

• Reference work · Independent publication

  2022 Northern Ireland Assembly election (Wikipedia) link

  Reports the 5 May 2022 Assembly election result, in which Sinn Féin became the largest party for the first time.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998 · Source record

• News analysis or explainer · Independent publication

  Government deal with the DUP to restore power sharing in Northern Ireland (Institute for Government) link

  Explains the Windsor Framework of 27 February 2023 and the January 2024 UK Government-DUP deal that ended the DUP's boycott and restored the Assembly and Executive.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998 · Source record

• Government publication · Government perspective or primary official source

  House of Commons Library, Northern Ireland: border polls (UK Parliament) link

  Official parliamentary research briefing explaining the border poll mechanism under the Northern Ireland Act 1998, the Secretary of State's discretionary and mandatory powers, and the unresolved question of how "likely" majority support for unification is to be judged.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998, Northern Ireland: constitutional status and the border poll question · Source record

• News analysis or explainer · Independent publication

  Irish reunification (Institute for Government) link

  Explainer on the legal route to a border poll and the current state of debate on Irish reunification.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998, Northern Ireland: constitutional status and the border poll question · Source record

• News analysis or explainer · Independent publication

  New Poll Shows Strong Support for a United Ireland on Both Sides of the Border as Part of the European Union (EU) (Irish Border Poll, 9 May 2026) link

  Reports a May 2026 poll finding much higher support for a united Ireland when the question frames it as joining the EU, versus a plain unification question.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998, Northern Ireland: constitutional status and the border poll question · Source record

• News analysis or explainer · Journalism

  Poll: support for united Ireland falls in Northern Ireland (UnHerd) link

  Reports a 2026 survey finding 35.8% support for Irish unification in Northern Ireland, down from 40.6% in 2025.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998, Northern Ireland: constitutional status and the border poll question · Source record

• News report · Journalism

  Sinn Féin's Michelle O'Neill elected first ever nationalist First Minister of Northern Ireland (The Irish Times, 3 February 2024) link

  Contemporary reporting on Michelle O'Neill's appointment as the first nationalist First Minister of Northern Ireland on 3 February 2024, following the DUP's two-year boycott of devolved government.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998, Northern Ireland: constitutional status and the border poll question · Source record

• Reference work · Independent publication

  Windsor Framework (Wikipedia) link

  Background on the 27 February 2023 UK-EU agreement revising the Northern Ireland Protocol's operation.

  Cited on: Northern Ireland, History of Northern Ireland's constitutional question since 1998 · Source record