Does Party Ideology Matter? A Roll-Call Analysis of Key Congressional Votes, 1833–1992

Do party ideologies matter in the making of public policy in the United States? The conventional answer to this question is equivocal. The American parties are generally considered to be less ideological than their Anglo European brethren. More important perhaps, these parties seem to lack the organizational characteristics necessary to implement such ideologies (were they present to begin with). With fragmented leadership in the legislature, a decentralized system of candidate selection and a federalist, divided-powers constitutional regime, the American political system seems inhospitable—if not downright inimical—to party ideology. The American parties, writes Theodore Lowi, are “constituent parties and have almost never been ‘responsible,’policy-making parties.”