Reliable Contributors? Leadership Turnover, Regime Type, and Commitments to Peacekeeping

Abstract While studies have investigated why states contribute personnel to peacekeeping operations, little consideration has been given to how domestic political factors influence state contributions. We argue that changes in executive power that involve a shift in the domestic source of leadership support cause fluctuations in troop deployments, leading to inconsistent contribution behavior. However, we argue that this effect is attenuated in more democratic states since greater overlaps in the preferences of domestic groups are present and political institutions exist to constrain major policy shifts. Analysis of state troop commitments to UN peacekeeping from 1991 to 2018 supports this argument. This research highlights the often overlooked role of domestic policy processes in peacekeeping contributions while moving beyond considering why some states contribute relatively more personnel to address variation within countries. The findings indicate that while democracies typically contribute fewer peacekeepers, they tend to be more consistent contributors in the face of leadership turnover.