Political Economics: Explaining Economic Policy

Combining the best of three separate traditions—the theory of macroeconomic policy, public choice, and rational choice in political science—Torsten Persson and Guido Tabellini suggest a unified approach to the field. As in modern macroeconomics, individual citizens behave rationally, their preferences over economic outcomes inducing preferences over policy. As in public choice, the delegation of policy decisions to elected representatives may give rise to agency problems between voters and politicians. And, as in rational choice, political institutions shape the procedures for setting policy and electing politicians. The authors outline a common method of analysis, establish several new results, and identify the main outstanding problems.