Extra-coalitional policy bargaining: investigating the power of committee chairs

Previous research found that coalition partners do not only control each other within the government, but also use instruments of the legislative arena. While the literature has mainly concentrated on parliamentary scrutiny, much less is known about the power of committee chairs in the policy-making process. Therefore, thispaper examines if parties use committee chairs to control their coalition partner. Wehypothesize that cross-partisan committee chairs will increase the probability that a legislative proposal is changed by the committee. Our theoretical expectations are tested with the help of a newly compiled, comprehensive data set of committee decisions on legislative proposals from 15 German Bundesländer. The case selection allows us to hold important institutional characteristics constant while increasing the variance of the variables on the government level. Our results confirm that committee chairs act as supervisory body and thus add empirical evidence to our understanding of oversight mechanisms in coalition governance.