There is currently a growing interest in the philosophy and political thought of Baruch de Spinoza following many years of comparative neglect, particularly within political philosophy. The focus of this paper is Spinoza's major work, the Ethics, and its relation to his political writings. It explores Spinoza's distinctive formulations of imagination and affect and considers some of the ways in which these impact upon his political thought, specifically via his reflections upon democracy and knowledge. The discussion draws particular attention to (...) the aporetic status of imagination and its tendency towards ambivalence. It argues that this dynamic account of imagination introduces provisionality and contingency into Spinoza's reflections upon politics that may, in turn, enrich discussions seeking to introduce an awareness of the affective resonances of communication and identification to democratic theory. (shrink)