New democratic parliaments in the former Soviet countries have been and remain important actors in the process of democratic transition and consolidation in the region. These parliaments had to develop new organizational structures to perform new functions and to deal with challenges presented by the processes of democratic transition and consolidation. Building a new committee system that can operate in a new multi-party environment has been among the main aspects of this transformation. This paper addresses the question of what drives the development of committee systems. Findings contribute to our understanding of why some legislatures organize around temporary ad hoc committees, while others decide to establish standing committees that span multiple legislative convocations. This study demonstrates that electoral factors as well as the characteristics of legislative-executive relations drive committee development in a developing legislature. Specifically, the electoral system, the time that deputies consider important to allocate for work on plenary and organizations, as well as the degree and the level of conflict in legislative-executive relations influence committee development. This study further points that distributional, informational, and partisan theoretical perspectives provide useful insights into committee development.