This book provides a new history of parliamentary conservatism and the extreme right in France during the successive crises of the years from 1870 to 1945. In it, Kevin Passmore charts royalist opposition to the newly established Republic, the emergence of the nationalist extreme right in the 1890s, and the parallel development of republican conservatism. He moves on to the hitherto unstudied story of conservatism in during the Great War, and then to the Right's victory in the 1919 elections. Passmore charts the crisis of parliamentary conservatism in the interwar years, and explores the Right's response to the rise of Fascism and Communism. He concludes by placing the Vichy regime, which governed France under the German Occupation, in the context of the history of conservative politics. This history is related to the struggle of those who saw themselves as 'elites' to preserve their leadership in the 'age of the masses'.