Do political leaders matter for development in Africa? Political leaders south of the Sahara have taken centre stage since countries in the region gained independence in the 1960s, yet a 'leadership trap' soon emerged with power-holders overstaying in office and chronic instability caused by coups resulting in decades of disappointing developmental performances. The beginnings of change are found in political reforms of the early 1990s, with many sub-Saharan countries introducing multiparty elections and an increasingly regular succession of leaders. But what impact did the new mechanisms for selecting leaders have on the political stabilization of African states, on the growth of their economies, and on the welfare of ordinary citizens? Drawing on a new dataset called the Africa Leadership Change (ALC), this innovative analysis of political leadership in Africa investigates the distinct leadership dynamics of development processes across the region from 1960 to 2018, revealing how, as Africa began to change its leaders and the way they reach power, these new leaders themselves began to change Africa.