Issue Conflict and Consensus among Party Leaders and Followers

American political parties are often regarded as “brokerage” organizations, weak in principle, devoid of ideology, and inclined to differ chiefly over unimportant questions. In contrast to the “ideological” parties of Europe—which supposedly appeal to their followers through sharply defined, coherent, and logically related doctrines—the American parties are thought to fit their convictions to the changing demands of the political contest. According to this view, each set of American party leaders is satisfied to play Tweedledee to the other's Tweedledum.