Separation of powers

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (July 2024) (Learn how and when to remove this message) This article may be unbalanced toward certain viewpoints. Please improve the article by adding information on neglected viewpoints, or discuss the issue on the talk page. (July 2024) This article contains too many or overly lengthy quotations. Please help summarize the quotations. Consider transferring direct quotations to Wikiquote or excerpts to Wikisource. (July 2024) (Learn how and when to remove this message)

Part of the Politics series
Politics
Outline Index Category
Primary topics Outline of political science Index of politics articles Politics by country Politics by subdivision Political economy Political history Political history of the world Political philosophy
Political systems Anarchy City-state Collective leadership Confessional system Democracy Dictatorship Directorial Federacy Feudalism Hybrid regime Meritocracy Monarchy Parliamentary Presidential Republic Semi-parliamentary Semi-presidential Theocracy
Academic disciplines Political science (political scientists) International relations (theory) Comparative politics Election science Political analysis Political theory Policy studies Political psychology Political sociology
Public administration Bureaucracy (street-level) Technocracy Adhocracy Service (Public / Civil)
Policy Public policy (doctrine) Domestic policy Foreign policy Civil society Public interest
Government branches Separation of powers Legislature Executive Judiciary Election commission
Related topics Sovereignty Polity / State / Country Theories of political behavior Biology and political orientation Political organisations Critique of political economy
Subseries Electoral systems Elections voting Unitarism Federalism Government (forms / Governance) Ideology Culture Political campaigning Political parties
Politics portal
v t e

The separation of powers principle functionally differentiates several types of state power (usually law-making, adjudication, and execution) and requires these operations of government to be conceptually and institutionally distinguishable and articulated, thereby maintaining the integrity of each.^[1] To put this model into practice, government is divided into structurally independent branches to perform various functions^[2] (most often a legislature, a judiciary and an administration, sometimes known as the trias politica). When each function is allocated strictly to one branch, a government is described as having a high degree of separation; whereas, when one person or branch plays a significant part in the exercise of more than one function, this represents a fusion of powers.