Multi-party system
system in which multiple political parties have the capacity to gain control of government offices, separately or in coalition
In political science, a multi-party system is a political system where more than two meaningfully distinct political parties regularly run for office and win offices (eg, membership in parliament) in elections. Multi-party systems tend to be more common in countries or jurisdictions (together, 'polities') which use proportional representation forms of election, compared to those that have implemented winner-take-all elections; this tendency is known as Duverger's law.
In multi-party countries or polities, usually no single party achieves at an election a parliamentary majority on its own (elections result in what are sometimes called hung parliaments). Instead, to craft a majority, multiple political parties must negotiate to form a coalition (also known as a 'minority government') which can command a majority of the votes in the relevant legislative organ of state (eg, parliamentary chamber). This majority is required in order to make laws, form an executive government, or conduct basically any of the necessary work of the parliament or the government (eg, to choose a president, elect parliamentary leadership, adopt a legislative agenda, or change rules of parliamentary procedure).
This tendency to not give sufficient power to one party to alone make significant changes—at least not without the support of other parties elected—tends to moderate governmental decision making in multi-party system jurisdictions; generally, it encourages negotiation over ideological purity, and more centrist, cooperative and compromising parties, governments and policies.
Comparisons with other party systems
Unlike a one-party system (or a dominant-party system), a multi-party system encourages the general constituency to form multiple distinct, officially recognized groups or alignments-of-interest, generally called political parties. Each party, especially but not only during election campaigns, competes for votes from the enfranchised constituents (those allowed to vote) of the relevant polity. A multi-party system prevents the leadership of a single party from controlling a single legislative chamber, at least not without ongoing challenge from other 'opposition' or 'minor' or 'minority' parties.
A special case of a multi-party system where only two parties have a realistic possibility of winning an election is called a two-party system.
Begin with the source’s own compact description: “Multi-party system” is system in which multiple political parties have the capacity to gain control of government offices, separately or in coalition. The dossier treats that line as a proposition to test through Multi-party, system and multiple, not as a finished interpretation.
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The phrase “system in which multiple political parties have the capacity to gain control of government offices, separately or in coalition” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The record creator and administrative purpose are central evidence, because official documentation reflects both action and institutional priorities. The source revision retrieved here is dated Jun 16, 2026. The linked authority identifier is Q223847. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Multi-party system” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.