The politics of abstentionism: Comparing Sinn Féin’s Westminster abstentionism to the Basque Nationalist left’s engagement with the Spanish parliament, 1979-2025

Erdocia, Iker and Leahy, Thomas ORCID: https://orcid.org/0000-0003-2046-3339 2026. The politics of abstentionism: Comparing Sinn Féin’s Westminster abstentionism to the Basque Nationalist left’s engagement with the Spanish parliament, 1979-2025. The British Journal of Politics and International Relations Item availability restricted.

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Abstract

Irish Republicans and the Basque Nationalist Left have been close allies throughout conflict and peace. One previous commonality was that their left-wing political wings Sinn Féin and Batasuna refused to participate in the British or Spanish parliament. For over a century, Sinn Féin has abstained from Westminster. In contrast, a new Basque left group Euskal Herria Bildu (EH Bildu) decided to consistently take their seats in Madrid. Utilising various sources including interviews with Irish Republicans and left-wing Basque Nationalists, we explore why the Basque Nationalist Left has abandoned abstentionism, in contrast to Sinn Féin’s position towards Westminster. Ultimately, different historical and contemporary factors produce contrasting strategies. These include the fact that Sinn Féin secured the right to Irish self-determination while Basques have not, and public opinion. This study provides a unique comparison on why some nationalist parties abstain from political institutions if elected while others end that tactic.

Item Type:	Article
Status:	In Press
Schools:	Schools > Cardiff Law & Politics
Subjects:	D History General and Old World > DA Great Britain D History General and Old World > DA Great Britain > DAW Central Europe D History General and Old World > DP Spain J Political Science > J General legislative and executive papers J Political Science > JA Political science (General)
Publisher:	Sage
ISSN:	1369-1481
Funders:	British Academy, Royal Irish Academy
Date of First Compliant Deposit:	12 February 2026
Date of Acceptance:	26 January 2026
Last Modified:	12 Feb 2026 11:34
URI:	https://orca.cardiff.ac.uk/id/eprint/184713

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