The paper develops an information-based theory of elections under authoritarian regimes. The paper shows first, that dictators' information problems lead them to either underestimate the political power of their challengers, thereby risking a coup, or overestimate this power, thereby wasting valuable resources in an attempt to appease their opposition. Second, that under conditions of information asymmetry between authoritarian leaders and potential opposition members, these leaders can use elections as an information gathering mechanism. The paper provides evidence in support of this theory, using data from 80 authoritarian regimes during 1952-1990. The analysis employs appropriate statistical methods in order to overcome endogeneity and framing problems that have impeded previous empirical research on electoral autocracies.