Radoslaw Zubek, Coalition Government and Committee Power (West European Politics, 38(5) 2015). In this paper, I examine the conditions under which parliamentary majorities reform legislative rules to expand or reduce committee power. I expect that, ceteris paribus, the higher the conflict inside the governing coalition, the higher the probability that parties in government adopt reforms expanding committee power and the lower the chance that they implement changes reducing such power. I test these expectations using original new data on the reforms of committee agenda powers undertaken in eight European states within 20 years from democratic transition. I find some evidence to support the endogeneity of committee power to the ideological heterogeneity of parliamentary government.