Narratives of hope are omnipresent in democratic life, but what can they tell us about the structure and orientation of politics? While common, they are often reduced to an all-compassing understanding that overlooks hope's various forms and implications. Democratic theory, however, lacks the theoretical language to attend to these distinctions. The aim of this essay is thus to define a collective and political account of hope and recover the normative basis of a democratic theory of hope. Drawing on the literature on hope and juxtaposing it with extracts from Harvey Milk's ‘The Hope Speech,’ I first distinguish its collective experience before turning to Hannah Arendt. While Arendt rejects a politics of hope that turns away from the world, exploring how she thinks with and against hope provides a theoretically fruitful approach that elevates the in-betweenness of its worldly expression. From that standpoint, I relate the work and experience of hoping with others to her notions of natality, action and promises. These three conceptual touchstones provide the normative basis of a democratic theory of hope and help situate a collective sense of possibility inherent in democratic politics.