party system
type of organization of a democracy in terms of the number of parties and their relative power
two-party system
government dominated by only two groups
multi-party system
system in which multiple political parties have the capacity to gain control of government offices, separately or in coalition
political era of the United States
model of American politics
dominant-party system
continuous dominance of a single political party in elections
political parties in the United States
overview of political parties in the United States