Party discipline is the ability of a parliamentary group of a political party to get its members to support the policies of their party leadership. In liberal democracies, it usually refers to the control that party leaders have over its legislature. Party discipline is important for all systems of government that allow parties to hold political power because it determines the degree to which the governmental infrastructure will be affected by legitimate political processes.
The term has a somewhat different meaning in Marxist-Leninist political systems such as the People's Republic of China. In this case it refers to administrative sanctions such as fines or expulsion that the Communist Party can impose on its members for actions such as corruption or disagreeing with the party.
Breaking party discipline in actual parliamentary votes is called crossing the floor.
Famous quotes containing the words party and/or discipline:
“Growing older, I have lost the need to be political, which means, in this country, the need to be left. I am driven into grudging toleration of the Conservative Party because it is the party of non-politics, of resistance to politics.”
—Kingsley Amis (1922–1995)
“... the surest test of discipline is its absence.”
—Clara Barton (1821–1912)