Abstract
This article presents spatial models of three legislative procedures in the EC: the consultation, co-operation and assent procedures. The theory characterizes for each procedure the set of policies that can be adopted and the equilibrium EC policy as a function of the ideal policies of the countries, the Commission and the Parliament, and the location of the status quo. It yields comparative statements about EC policy and the institutions' powers under the three procedures, thus providing a framework for assessing arguments about the merits and demerits of existing EC institutions and proposals for institutional change.