The impact of political institutions on policy performance has been a major research question in studies of advanced democracies. This study analyzes the effects of institutions and political actors on economic, social and environmental policies in ten Central Eastern European countries from 1995 to 2004. Using time-series-cross section (TSCS) regression analysis, this study shows that the impact of institutional veto players on policy output is more significant than international pressure. Moreover, the communist legacy has a much higher effect on policy output than expected.