Social movements inspired by powerful ideological beliefs continue to define global and national politics. In Yugoslavia, civil war is justified in the name of religion and ethnic identity. The Arab-Israeli conflict rages on, fuelled on either side by a conviction of indisputable ideological truth. Closer to home, American religious organizations consistently challenge political authority in the name of a higher morality. Existing theories either ignore the role of religion in social movement formation or discredit the claim that religious convictions can directly lead adherents to engage in political action. Through a detailed analysis of American and British evangelical Christians, J. Christopher Soper here demonstrates that religious commitments were, in fact, crucial in promoting political activism in both countries. Evangelical Christianity in the United States and Great Britain is the first book to provide such a comparative perspective. Focussing on the temperance movement and the politics of abortion, Soper highlights the similarities, and equally intriguing differences, between British and American political/evangelical structures. Using interviews and literature gathered from evangelical organizations on both sides of the Atlantic, he paints a fascinating picture of a hitherto neglected aspect of social movement theory. Evangelical Christianity in the United States and Great Britain is an invaluable new resource for scholars of religious studies, political science and sociology alike. Soper provides a unique model with which to view a dominant political trend: the mobilization of collective action groups around a set of powerful beliefs. His research can thus be applied beyond the boundaries of his chosen topic, and will be an important contribution to the study of any movement in which ideology assumes a significant role.