Introduction; Part I. Conceptual Building Blocks of the Christian Democratic Ideology: 1. Anti-materialism: Christian Democracy's philosophy of history; 2. Personalism: neo-thomist metaphysics and human rights; 3. Popularism: consociational democracy and constitutionalism; 4. Subsidiarity: a theory of the state and internationalism; 5. Social capitalism: principles of Christian Democratic political economy; 6. Christian inspiration: the role of religion in politics; Part II. History and Future Prospects of Christian Democracy as a Political Phenomenon: 7. Christian Democracy in Continental Europe: from dominance to doom?; 8. The European Union as a Christian Democracy: a heuristic approach; 9. Christian Democracy in the Americas: periphery or vanguard?; 10. Persistent normative potential of Christian Democracy: between Muslim Democracy and far-right populism; Conclusion.