Centripetalism suggests that the best way to achieve political stability in deeply divided societies is to enhance the political rewards of moderation by adopting electoral rules that require winning politicians to seek cross-community support. This paper considers the validity of this position by examining election results in eight deeply divided societies-Nigeria, Sri Lanka, Fiji, Papua New Guinea, Bosnia and Herzegovina, Indonesia, Kenya and Northern Ireland-and argues that rather than consolidating moderation, the outcome is more likely to be increased instability, and even, in some cases, increased extremism.