Making rules credible: divided government and political budget cycles

Abstract

Political budget cycles (PBCs) can result from the credibility problems office-motivated incumbents face under asymmetric information, due to the temptation to manipulate fiscal policy to increase their electoral chances. We analyze the role of rules that limit public debt, because borrowing is a necessary condition for aggregate PBCs. Since the legislature must typically authorize new debt, divided government can make these fiscal rules credible. Commitment is undermined by either unified government or imperfect compliance with the budget law, which can help explain why PBCs are stronger in developing countries and in new democracies. When divided government affects efficiency, voters must trade off electoral distortions and government competence.