Dynamics of the Party System: Alignment and Realignment of Political Parties in the United States - Paperbackby James L. Sundquist (Author) " Since the original edition of Dynamics of the Party System was published in 1973, American politics have continued on a tumultuous course. In the vacuum left by the decline of the Democratic and Republican parties, single interest groups have risen and flourished. Protest movements on the left and the New Right at the opposite pole have challenged and divided the major parties, and the Reagan Revolution in reversing a