Between the devil and the DUP: the Democratic Unionist Party and the politics of Brexit

  • Mary C. MurphyEmail author
  • Jonathan Evershed
Original Article


The Democratic Unionist Party (DUP) gained an unexpected foothold at the heart of the British political system following the 2017 UK general election. Political arithmetic compelled the then Prime Minister Theresa May to enter a Confidence and Supply Agreement with Northern Ireland’s ten DUP MPs in order to shore up her minority government. The timing of the DUP’s positioning at the UK’s constitutional centre coincided with the early phase of the Brexit process and afforded the small Northern Ireland political party a degree of influence as the UK struggled to agree the terms of its departure from the EU. This article provides some analytical clarity as to how and why the DUP unexpectedly came to play a leading role in Brexit’s complex and dramatic political theatre. Drawing on interviews with senior DUP figures, opposing political parties, civil servants and political commentators, this article demonstrates the hollowness of the DUP’s Brexit position, and points to ways in which the party’s influence over the UK’s approach to the Brexit negotiations undermined relationships in Northern Ireland between unionists and nationalists, between North and South (on the island of Ireland), and between Ireland and the UK. The research reveals that Brexit has precipitated (a return to) a disruptive Unionist politics which is defined by a profound and destabilising ontological insecurity and a fear of being ‘sold out’.


Brexit Backstop Northern Ireland Democratic Unionist Party 



The research for this article was undertaken as part of the ESRC-funded project ES/P009441/1: ‘Between Two Unions: The Constitutional Future of the Islands after Brexit’. The authors would like to acknowledge and record their thanks for the support of the project team and the ESRC.


  1. Ashe, F., and C. McCluskey. 2015. ‘Doing Their Bit’: Gendering the Constitution of Protestant, Unionist and Loyalist Identities. In The Contested Identities of Ulster Protestants, ed. T.P. Burgess and G. Mulvenna, 55–69. Basingstoke: Palgrave Macmillan.CrossRefGoogle Scholar
  2. BBC News. 2015. Election 2015 Results: Northern Ireland. Accessed 16 August 2018.
  3. BBC News. 2016a. NI Election Results 2016. Accessed 16 August 2018.
  4. BBC News. 2016b. EU Referendum Results. Accessed 16 August 2018.
  5. BBC News. 2017a. NI Election Results 2017. Accessed 16 August 2018.
  6. BBC News. 2017b. Election 2017 Results: Northern Ireland. Accessed 16 August 2018.
  7. BBC News. 2017c. Irish PM Should Know Better Over Brexit, Says Arlene Foster. 21 November. Accessed 16 August 2018.
  8. Belfast Telegraph. 2017. Martin McGuinness’ Resignation Letter in Full. 9 January. Accessed 16 August 2018.
  9. Bell, J. 2016. Simon Hamilton Again Dodges Question on How he Voted in the EU Referendum. Belfast Telegraph, 23 September. Accessed 16 August 2018.
  10. Bevington, M., and A.J. Wager. 2018. The DUP and the Politics of Brexit in Northern Ireland. Brexit and the Island of Ireland, 8–9. London: UK in a Changing Europe.Google Scholar
  11. Boffey, D., J. Rankin, and A. Asthana. 2017. May’s Weakness Exposed as DUP Derails Brexit Progress. The Guardian, 5 December. Accessed 15 August 2018.
  12. Bruce, S. 2007. Paisley: Religion and Politics in Northern Ireland. Oxford: Oxford University Press.CrossRefGoogle Scholar
  13. Cabinet Office. 2017. Agreement Between the Conservative and Unionist Party and the Democratic Unionist Party on Support for the Government in Parliament. Accessed 15 August 2018.
  14. Campbell, B. 2018. Brexit: DUP’s Arlene Foster Stirs Hornets’ Nest with Claim Good Friday Accord ‘is Not Sacrosanct’. Belfast Telegraph, 3 October. Accessed 15 March 2019.
  15. Cochrane, F. 1997. Unionist Politics and the Politics of Unionism Since the Anglo-Irish Agreement. Cork: Cork University Press.Google Scholar
  16. Cohen, S. 2007. Winning While Losing: The Apprentice Boys of Derry Walk Their Beat. Political Geography 16 (8): 951–967.CrossRefGoogle Scholar
  17. Connelly, T. 2018a. Brexit and Ireland. London: Penguin.Google Scholar
  18. Connelly, T. 2018b. A Brief History of the Backstop. RTÉ News, 20 October. Accessed 26 March 2019.
  19. Coulter, C. 1996. Direct rule and the Unionist middle-classes. In Unionism in Modern Ireland, ed. R. English and G. Walker, 169–191. Basingstoke: Macmillan.CrossRefGoogle Scholar
  20. Daily Politics. 2017. [TV]. BBC Two. 21 November. 12:00.Google Scholar
  21. De Winter, L., and M. Gomez-Reino Cachafeiro. 2002. European Integration and Ethnoregionalist Parties. Party Politics 8 (4): 483–503.CrossRefGoogle Scholar
  22. Democratic Unionist Party (DUP). 2014. European and Local Election Manifesto 2014. Accessed 15 August 2018.
  23. Democratic Unionist Party (DUP). 2017. Manifesto for the 2017 Westminster Election. Accessed 16 August 2018.
  24. Department for Exiting the European Union (DExEU). 2019. UK Government Commitments to Northern Ireland and its Integral Place in the United Kingdom. Accessed 28 March 2019.
  25. Dixon, P. 2008. Northern Ireland: The Politics of War and Peace. 2nd ed. Basingstoke: Palgrave Macmillan.CrossRefGoogle Scholar
  26. Emerson, N. 2018. DUP Faces Heavy Responsibility for Brexit Position Taken Lightly. Irish Times, 10 May. Accessed 21 March 2019.
  27. Emerson, N. 2019. The DUP’s Westminster Adventure is Coming to an End. Irish Times, 21 March. Accessed 21 March 2019.
  28. Evershed, J. 2018a. Ghosts of the Somme: Commemoration and Culture War in Northern Ireland. Notre Dame: University of Notre Dame Press.CrossRefGoogle Scholar
  29. Evershed, J. 2018b. What is Special About Customs? Centre on Constitutional Change, 25 July, Accessed 15 March 2019.
  30. Evershed, J. 2019a. The DUP and No-Deal Tariffs: Double Standards? Centre on Constitutional Change, 14 March. Accessed 15 March 2019.
  31. Evershed, J. 2019b. The Northern Ireland-Only Backstop Revisited. Centre on Constitutional Change, 11 September. Accessed 11 September 2019.
  32. Executive Office. 2016. Letter to the Prime Minister, the Rt Hon Theresa May MP. 10 August. Accessed 16 August 2018.
  33. Farrington, C. 2001. Ulster Unionist Political Divisions in the Late Twentieth Century. Irish Political Studies 16 (1): 49–71.CrossRefGoogle Scholar
  34. Finlay, A. 2001. Defeatism and Northern Protestant ‘Identity’. Global Review of Ethnopolitics 1 (2): 3–20.CrossRefGoogle Scholar
  35. Ganiel, G. 2009. ‘Battling in Brussels’: The DUP and the European Union. Irish Political Studies 24 (4): 575–588.CrossRefGoogle Scholar
  36. Garry, J., K. McNicholl, B. O’Leary, and J. Pow. 2018. Northern Ireland and the UK’s Exit from the EU: What do People Think?. London: UK in a Changing Europe.Google Scholar
  37. Geoghegan, P. and A. Ramsay. 2017. The ‘Dark Money’ that Paid for Brexit. openDemocracy, 15 February. Accessed 15 August 2018.
  38. Gordon, M. 2016. The UK’s Sovereignty Situation: Brexit, Bewilderment and Beyond. King’s Law Journal 27 (3): 333–343.CrossRefGoogle Scholar
  39. Gordon, G. 2017. Crocodiles, Alligators and the Irish Language. BBC News, 7 February. Accessed 16 August 2018.
  40. Gorman, T. 2018. Whither now the DUP? RTÉ News, 9 February. Accessed 15 August 2018.
  41. Greer, J. 2015. Typical Unionists? The Politicians and their People, Past and Present. In The Contested Identities of Ulster Protestants, ed. T.P. Burgess and G. Mulvenna, 39–54. Basingstoke: Palgrave Macmillan.CrossRefGoogle Scholar
  42. Hayward, K. 2017. The DUP was Painted into a Corner by Brexiters’ Hyperbole, but a Solution is Possible. The Guardian, 6 December. Accessed 28 March 2019.
  43. Hayward, K. and D. Phinnemore. 2019. Breached or Protected? The ‘Principle’ of Consent in Northern Ireland and the UK government’s Brexit Proposals. LSE Brexit, 9 January. Accessed 15 March 2019.
  44. Kane, A. 2019. Sinn Féin, just like the DUP, is Impaled on a Brexit Hook. Belfast News Letter, 25 March. Accessed 25 March 2019.
  45. Keating, M., P. Kearney and E. Hepburn. 2009. Territorial policy communities and devolution in the UK. Cambridge Journal of Regions, Economy and Society 2 (1): 51–66.CrossRefGoogle Scholar
  46. Ladrech, R. 2002. Europeanization and Political Parties: Towards a Framework for Analysis. Party Politics 8 (4): 389–403.CrossRefGoogle Scholar
  47. Lucidtalk. 2019. LT NI Opinion Panel Quarterly ‘Tracker’ Poll. 20 August.–-August-2019. Accessed 12 September 2019.
  48. Lyons, N. 2017. Stormont at Risk from DUP Pact, says Kenny. The Times, 12 June. Accessed 28 March 2019.
  49. McAuley, J.W. 1999. Very British rebels’: Politics and discourse within contemporary Ulster unionism. In Transforming Politics: Power and Resistance, ed. P. Bagguley and J. Hearn, 106–125. Basingstoke: Macmillan.CrossRefGoogle Scholar
  50. McAuley, J.W. 2010. Ulster’s Last Stand? Reconstructing Unionism after the Peace Process. Dublin: Irish Academic Press.Google Scholar
  51. McAuley, J.W. 2016. Very British Rebels? The Culture and Politics of Ulster Loyalism. London: Bloomsbury.Google Scholar
  52. McDaid, S. 2018. A Post-Brexit Hard Border has Attractions for both DUP and Sinn Féin. The Irish Times, 5 April. Accessed 15 March 2019.
  53. McGovern, M., and P. Shirlow. 1997. Counter-Insurgency, Deindustrialisation and the Political Economy of Ulster Loyalism. In Who are ‘the People’? Unionism, Protestantism and Loyalism in Northern Ireland, ed. P. Shirlow and M. McGovern, 176–193. London: Pluto.Google Scholar
  54. McVeigh, R. 2015. No One Likes Us, We Don’t Care: What is to be (Un)Done About Ulster Protestant Identity. In The Contested Identities of Ulster Protestants, ed. T.P. Burgess and G. Mulvenna, 113–133. Basingstoke: Palgrave Macmillan.CrossRefGoogle Scholar
  55. Moloney, E. 2008. Paisley: From Demagogue to Democrat?. Dublin: Poolbeg Press.Google Scholar
  56. Moriarty, G. 2016. DUP Chastises Kenny Over Brexit Warning on Northern Ireland. Irish Times, 27 January. Accessed 29 March 2019.
  57. Mulvenna, G. 2015. Labour Aristocracies, Triumphalism and Melancholy: Mis-conceptions of the Protestant Working Class and Loyalist Community. In The Contested Identities of Ulster Protestants, ed. T.P. Burgess and G. Mulvenna, 159–176. Basingstoke: Palgrave Macmillan.CrossRefGoogle Scholar
  58. Murphy, M.C. 2009. Pragmatic Politics: The Ulster Unionist Party and the European Union. Irish Political Studies 24 (4): 589–602.CrossRefGoogle Scholar
  59. Murphy, M.C. 2018. Europe and Northern Ireland’s Future: Negotiating Brexit’s Unique Case. Newcastle: Agenda Publishing.CrossRefGoogle Scholar
  60. Murphy, M.C. 2019a. Westminster Should Acknowledge and Respect the Majority in Northern Ireland. Centre on Constitutional Change, 12 March. Accessed 15 March 2019.
  61. Murphy, M.C. 2019b. What are the Irish Government’s Brexit Priorities? A United Ireland is not one of them. Centre on Constitutional Change, 17 January. Accessed 27 March 2019.
  62. News Letter. 2016. FULL STATEMENT: Arlene Foster Explains why DUP want to Leave EU. 22 February. Accessed 16 August 2018.
  63. Nolan, P., D. Bryan, C. Dwyer, K. Hayward, K. Radford and P. Shirlow. 2014. The flag dispute: Anatomy of a protest. Belfast: Queen’s University Belfast.Google Scholar
  64. O’Carroll, L. 2018. Arlene Foster hits out at Michel Barnier over Irish border. The Guardian, 30 April. Accessed 16 August 2018.
  65. O’Leary, B. 2018. The Twilight of the United Kingdom and Tiocfaidh ár lá: Twenty Years after the Good Friday Agreement. Ethnopolitics 17 (3): 223–242.CrossRefGoogle Scholar
  66. O’Toole, F. 2017a. DUP’s Crush on Britain will end Badly. Irish Times, 17 June. Accessed 15 August 2018.
  67. O’Toole, F. 2017b. In Humiliating May, DUP Killed the Thing it Loves. Irish Times, 9 December. Accessed 15 August 2018.
  68. Parr, C. 2007. Inventing the myth: Political passions and the ulster protestant imagination. Oxford: Oxford University Press.Google Scholar
  69. Phinnemore, D., and K. Hayward. 2017. UK Withdrawal (‘Brexit’) and the Good Friday Agreement. Brussels: Policy Department for Citizens’ Rights and Constitutional Affairs, European Parliament.Google Scholar
  70. Robinson, P. 2012. Speech by Peter Robinson, then Leader of the Democratic Unionist Party (DUP), to the DUP Annual Conference, Belfast, (24 November 2012). CAIN Web Service. Accessed 28 March 2019.
  71. RTÉ News (2018) Govt ‘Flexible’ on Solutions to Border Issue—Coveney. 13 May. Accessed 16 August 2018.
  72. Searle, J.T. 2015. The Scarlet Woman and the Red Hand: Evangelical Apocalyptic Belief in the Northern Ireland Troubles. Eugene: Pickwick Publications.Google Scholar
  73. Shapiro, I., and S. Bedi. 2007. Introduction: Contingency’s Challenge to Political Science. In Political Contingency: Studying the Unexpected, the Accidental and the Unforeseen, ed. I. Shapiro and S. Bedi, 1–20. New York: NYU Press.Google Scholar
  74. Sheldon, J. 2019. Unionism and the Conservative Brexit Deal Rebellion. Centre on Constitutional Change, 24 January. Accessed 11 September 2019.
  75. Shipman, T. 2016. All Out War: The Full Story of How Brexit Sunk Britain’s Political Class. London: William Collins.Google Scholar
  76. Sinn Féin. 2016. The Case for the North to Achieve Designated Special Status within the EU. Accessed 28 March 2019.
  77. Skoutaris, N. 2018. Why the EU’s Brexit ‘Backstop Option’ for Northern Ireland Doesn’t Threaten the UK’s Constitutional Integrity. The Conversation, 6 March. Accessed 28 March 2019.
  78. Social Democratic and Labour Party (SDLP). 2017. Securing our Future in Europe: Proposals for a Special Status for Northern Ireland Within the EU. Accessed 28 March 2019.
  79. Todd, J. 2018. Unionism and the Paradoxes of Identity Change. Irish Political Studies 33 (1): 136–143.CrossRefGoogle Scholar
  80. Tonge, J. 2017. Supplying Confidence or Trouble? The Deal Between the Democratic Unionist Party and the Conservative Party. The Political Quarterly 88 (3): 412–416.CrossRefGoogle Scholar
  81. Tonge, J., M. Braniff, T. Hennessey, J.W. McAuley, and S. Whiting. 2014. The Democratic Unionist Party: From Protest to Power. Oxford: Oxford University Press.CrossRefGoogle Scholar
  82. Tonge, J., and J. Evans. 2017. Northern Ireland: Double Victory for the Democratic Unionist Party. Parliamentary Affairs 71 (1): 139–154.Google Scholar

Copyright information

© Springer Nature Limited 2019

Authors and Affiliations

  1. 1.Department of Government and PoliticsUniversity College CorkCorkIreland

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