It is frequently argued that ethnic groups across Alrica retain homogenous preferences stemming from a sense of collective identity and shared destiny, and that they unvaryingly prefer the same outcomes in zero-sum competitions for scarce resources. This article presents results from comparative field surveys examining these claims in Sierra Leone and Liberia following postconflict elections. In contradiction with conventional expectations, the results show corroboration on several issues across voters from several ethnic groups as well as heterogeneity in preferences among voters from the same ethnic groups in both countries. The implications for democratization and conflict resolution in Africa are discussed. E-mail: fbatty@colgate.edu