During the past fifty years American democracy has been transformed by the collapse of non-ideological and decentralized traditional party organizations and also by the emergence of more ideologically distinct and integrated service vendor parties and their allied groups. In this book, Joel Paddock uses several original data sets to provide new insights into the ways parties adapt to politics in the telecommunications age, growing interparty ideological differences, the changing relationship between parties and interest groups, and party nationalization. Well-suited for either graduate or undergraduate courses on political parties or linkage institutions, this book provides a fresh perspective on party transformation and the American democratic process.