A POSITIVE THEORY OF DISCRETIONARY POLICY, THE COST OF DEMOCRATIC GOVERNMENT AND THE BENEFITS OF A CONSTITUTION

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Abstract
We offer an explanation of government's preference for discretionary policy action. The main elements are asymmetric information and the ability and desire of governments to maximize reelection prospects. Discretionary policy imposes a social cost. We show that the cost is eliminated if all voters have the same information as the government. An optimal, state contingent policy rule that precommits government through a constitution eliminates the cost by removing government's opportunities to exploit its informational advantage. Rules of this kind, and constitutional restrictions, are difficult to enforce in the presence of uncertainty and different information available to government and the public.

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