Given the increased openness of countries to international trade and financial flows, the general public and the scholarly literature have grown skeptical about the capacity of policy-makers to affect economic performance. Challenging this view, Political Parties, Growth, and Equality shows that the increasingly interdependent world economy and recent technological shocks have actually exacerbated the dilemmas faced by governments in choosing among various policy objectives, such as generating jobs and reducing income inequality, thereby granting political parties and electoral politics a fundamental and growing role in the economy. To make growth and equality compatible, social democrats employ the public sector to raise the productivity of capital and labor. By contrast, conservatives rely on the private provision of investment. Based on analysis of the economic policies of all OECD countries since the 1960s and in-depth examination of Britain and Spain in the 1980s, this book offers a new understanding of how contemporary democracies work.