2 Timothy Besley and Anne Case, 'Political Institutions and Policy Choices: Empirical Evidence from the United States', Journal of Economic Literature, 41 (2003), 7-73; George A. Boyne, 'Theory, Methodology and Results in Political Science - The Case of Output Studies', British Journal of Political Science, 15 (1985), 473-515; George A. Boyne, 'Assessing Party Effects on Local Policies: A Quarter Century of Progress or Eternal Recurrence?' Political Studies, 44 (1996), 232-52; L. J. Sharpe and K. Newton, Does Politics Matter? The Determinants of Public Policy (Oxford: Clarendon Press, 1984).
3 Carles Boix, Political Parties, Growth and Inequality (Cambridge: Cambridge University Press, 1998); Evelyne Huber and John D. Stephens, Development and Crisis of the Welfare State: Parties and Policies in Global Markets (Chicago: University of Chicago Press, 2001).
4 Donald E. Stokes, 'Spatial Models of Party Competition', American Political Science Review, 57 (1963), 368-77; Harold D. Clarke, David Sanders, Marianne C. Stewart and Paul Whiteley, Political Choice in Britain (Oxford: Oxford University Press, 2004).
5 Austin Ranney, The Doctrine of Responsible Party Government: Its Origins and Present State (Urbana: University of Illinois Press, 1954); Kenneth Benoit and Michael Laver, Party Policy in Modern Democracies (London: Routledge, 2006); Peter Mair, 'The Challenge to Party Government', West European Politics, 31 (2008), 211-34.
6 Schmidt, 'When Parties Matter'.
7 Boix, Political Parties, Growth and Inequality; Huber and Stephens, Development and Crisis of the Welfare State.
8 Garrett, Partisan Politics in the Global Economy; Torben Iversen and David Soskice, 'Real Exchange Rates and Competitiveness: The Political Economy of Skill Formation, Wage Compression, and Electoral Systems', American Political Science Review, 104 (2010), 601-23.