The Routledge Handbook of African Politics

If you were looking for a definitive overview of African Politics, you could probably do worse than this new volume, edited by Nic Cheeseman, David Anderson, and Andrea Scheibler. 32 chapters covering the State, Identity, Conflict, Democracy, Development, and International Relations.

For more, here is Andi writing at Democracy in Africa:

The Handbook, published last month, is the product of a collaboration between 35 established and emerging Africanist academics. Three years in the making, the Handbook is arguably the most comprehensive overview of African politics currently available on the market and we hope it will become a standard reference book for students seeking to understand the development of, and transitions within, contemporary Africa. ... 

Self-recommending. (And a 20% discount here)