Chapter 3 presents the Africa Leadership Change (ALC) dataset, an original and comprehensive dataset designed to give better and fuller account of the various modes in which sub-Saharan leaders attain and abandon power, as well as to examine the evolution of these processes. The Africa Leadership Change dataset covers all changes in a country’s top political office (be this a presidential, a prime ministerial, or a king’s position) in all sub-Saharan states from 1960, or subsequent year of independence, to 2018. The dataset covers the complete historical series of leaders who were in power south of the Sahara in that period. It details how they entered power and how they left it; the amount of time that they spent in office; the changing sources of their power and legitimacy during their tenure; the country’s main political arrangements under their rule; a country’s frequency of leadership changes, and several other related aspects