This study examines the role of team political skill in predicting team effectiveness. Extending the current paradigm of individual political skill and contributing to the team effectiveness literature, we offer a theoretical framework for team political skill composition and test a model whereby task and social cohesion mediate the relationship between team political skill and team performance. On the basis of the results obtained from 189 student project teams and 28 business work teams, we demonstrate that team political skill benefits extend to groups. In both samples, team political skill directly related to subjective and objective team performance. Among several team political skill composition models, the interaction between the group skill mean and standard deviation ("skill strength") was found to be the best predictor of team emergent states and outcomes. Team political skill was related to objective team performance via social and task cohesion in the student teams and via task cohesion in the work teams. Finally, we investigated the potential dark side of high team political skill but failed to support the too-much-of-a-good-thing hypothesis. Given the social focus of the construct, an aim for future research is to further understand how the composition of individual political skill influences team dynamics and outcomes. Multiple organizational implications extend to recruitment, training, development, and team building.