I had meant to post this, but now I feel like I can't say anything without sounding superfluous. I guess I'll just add that it's depressing that was 32 years (or so) until an African leader actually lost re-election. Or, more accurately, let themselves lose. The list of such leaders, off the top of my head, remains pitifully short-- there's Kerekou, Abdou Diouf and then (again!) Abdoulaye Wade in Senegal, Hastings Banda in Malawi, Kenneth Kaunda in Zambia, Moncef Marzouki in Tunisia, and--in where you'd least expect it-- Goodluck Jonathan in Nigeria. I think that's just about it. Just them.
There's also, from recent years, Joyce Banda in Malawi and Rupiah Banda in Zambia.