We apply a typology of exile to factions involved in the Mexican and Russian Revolutions of the early 20th century. Our typology is based on Grubačić and O’Hearn’s theory of exile, which seeks to explain how alternative social institutions based on mutual aid, substantive reproduction, and egalitarian, direct democracy come into being and sustain themselves. We argue for exile as a determinant of revolutionary outcomes and the state (de)formation process and that we must understand exile-in-rupture as a moment when structures are at maximal flux due to the existence of exilic factions. By doing so, we offer a novel approach to understanding revolutions and state (de)formation based upon the alliances between exilic and incorporative factions. Through descriptions of loyalty bargains made, maintained, and broken during the Mexican and Russian Revolutions, we demonstrate how factions representing autonomy and exit are excluded from the resulting political-economic order post-Revolution, while their energy and power are leveraged during revolution itself. Based on this, we argue that exile is a key component of radical strategy, but that it is often precariously based on loyalty bargains that underpin it. Due to exile’s precarity, revolutions are foreclosed by reincorporation into the capitalist world-system as states are (re)formed by incorporative factions. Therefore, exile is both a necessary and contingent component of revolution and state (de)formation.