A. James Reimer’s (1942-2010) theopolitical project, intended to be a fully theologically conceptualized political theology, offers a constructive and creative contribution to this burgeoning field of theological inquiry. Reimer’s thesis for this theologically derived politics focuses on the necessity to take seriously the biblical-Trinitarian foundations for all Christian social ethics, but also on the importance of astute and faithful engagement by Christians in public institutional life, including the political realm. While Reimer understood himself to be working as an Anabaptist, and hoped to invite that tradition to embrace a more positive view of civil institutions than has historically been the case, he was not limited by that tradition or beholden to take only its sources into account. Ever alert to the problems inherent in every kind of reductionism, and especially so in cases where theology is reduced to either ethics or politics, Reimer’s political theology pursues the investigation of theological realities that are to serve as the engine, the generative force of a political theology that seeks to articulate both a critical and a positive-constructive approach to public/political life and institutions.