The Ibrahim Index of African Governance has just been announced for 2008. Given so many semi-presidential countries can be found in Africa, it seems like a useful research tool for studies relating to the comparison of presidential, parliamentary and semi-presidential countries, or for the performance of different types of semi-presidential countries.

The index is similar to but different from other indices such as the Freedom House and Polity indices, and it can be used like them in studies to measure comparative development and so on.

The index goes from 0-100, with 100 being the best score. The highest score is Mauritius at 85.1. The lowest is Somalia at 18.9. The highest semi-presidential country is Cape Verde at 74.7 and the lowest is DRC at 29.8.

The website sets out the methodology of the Index very clearly.