"It takes a coalition": Coalition potential and legislative decision making

This article empirically illustrates the value of coalition formation in legislative bargaining. I argue that legislators' potential to form powerful coalitions, their coalition potential, is essential to their ability to obtain preferred policy outcomes. Using data on the European Union's legislative process, I show that coalition potential significantly increases legislators' success. Moreover, the value of coalition potential depends on the voting rules used to pass legislation. For example, under the unanimity voting rule, the importance of coalition potential is insignificant because of the veto power held by each legislator.