Politics of Lithuania takes place in a framework of a unitary semi-presidential representative democratic republic,[1][2][3][4] whereby the president of Lithuania is the head of state and the prime minister of Lithuania is the head of government, and of a multi-party system.
Executive power is exercised by the president and the Government, which is headed by the prime minister. Legislative power is vested in both the Government and the unicameral Seimas (Lithuanian Parliament). Judicial power is vested in judges appointed by the president of Lithuania and is independent of executive and legislature power. The judiciary consists of the Constitutional Court, the Supreme Court, and the Court of Appeal as well as the separate administrative courts. The Constitution of the Republic of Lithuania established these powers upon its approval on 25 October 1992. Being a multi-party system, the government of Lithuania is not dominated by any single political party, rather it consists of numerous parties that must work with each other to form coalition governments. The Economist Intelligence Unit rated Lithuania a "flawed democracy" in 2022.[5][needs update]
Duhamel has developed the approach further: He stresses that the French construction does not correspond to either parliamentary or the presidential form of government, and then develops the distinction of 'système politique' and 'régime constitutionnel'. While the former comprises the exercise of power that results from the dominant institutional practice, the latter is the totality of the rules for the dominant institutional practice of the power. In this way, France appears as 'presidentialist system' endowed with a 'semi-presidential regime' (1983: 587). By this standard he recognizes Duverger's pléiade as semi-presidential regimes, as well as Poland, Romania, Bulgaria and Lithuania (1993: 87).
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A pattern similar to the French case of compatible majorities alternating with periods of cohabitation emerged in Lithuania, where Talat-Kelpsa (2001) notes that the ability of the Lithuanian president to influence government formation and policy declined abruptly when he lost the sympathetic majority in parliament.