1. Robert A. Dahl, ‘Preface’, in Dahl, Political Oppositions in Western Democracies, p. xiii.
2. Catherine E. Netjes and Kees van Kersbergen, ‘Interests, Identity and Political Allegiance in the European Union’, paper presented at Euroscepticism Conference, Amsterdam, July 2005, Table 1.
3. See, for example, Richard Rose, Governing without Consensus: An Irish Perspective, London, Faber and Faber, 1971; and Ian McAllister, The Northern Ireland Social Democratic and Labour Party, London, Macmillan, 1977.
4. The Politics of 'Eurocratic' Structure and the New European Agencies
5. Lipset and Rokkan, ‘Cleavage’, p. 11.