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The politics of New Zealand (Māori: tōrangapū o Aotearoa) function within a framework of an independent, unitary, parliamentary democracy. The system of government is based on the Westminster system, and the legal system is modelled on the common law of England. New Zealand is a constitutional monarchy in which King Charles III is the sovereign and head of state, while his prime minister serves as the head of government.
The New Zealand Parliament holds legislative power and consists of the King and the House of Representatives. The King is represented by the governor-general when not present in the country himself. Members of Parliament (MPs) are each elected to the House of Representatives for a flexible term of office, with general elections held at least every three years using a mixed-member proportional (MMP) system. MPs usually belong to political parties. New Zealand has a multi-party system, though the dominant parties have historically been the Labour Party and the National Party (or its predecessors). Minority governments are common and typically dependent on confidence-and-supply agreements with other parties in the House of Representatives.
Executive power in New Zealand is based on the principle that while the King reigns, the Government rules.[1] Although an integral part of the process of government, the King and his governor-general remain politically neutral and are not personally involved in the everyday aspects of governing. The New Zealand Government exercises authority on behalf of and by the consent of the sovereign. Government is made up of ministers, who are selected from among MPs and accountable to Parliament. Most ministers are members of the Cabinet, which is the main decision-making body of the Government. It is headed by the prime minister, who is the most senior minister formally appointed by the governor-general. Other ministers are appointed by the governor-general on the advice of the head of government.
According to the V-Dem Democracy Indices New Zealand was the sixth-most electoral democratic country in the world in 2023.[2] The country ranks highly for government transparency and had the second lowest perceived level of corruption in the world in 2022.[3]
This arrangement is best described by the saying that 'while the Sovereign reigns, the Government rules.'