Government
Type: Republic.
Constitution: August 20, 1949. Substantially rewritten in 1989, amended in 1990.
Branches: Executive--president of the Republic (head of state), prime minister (head of government), Council of Ministers. Legislative--National Assembly (386 members, 4-year term). Judicial--Supreme Court and Constitutional Court.
Administrative regions: 19 counties plus capital region of Budapest.
Principal political parties: Fidesz-Hungarian Civic Parry--center-right; Hungarian Socialist Party (MSZP)--center-left; Alliance of Free Democrats(SZDSZ)--center-left; Hungarian Justice and Life Party (MIEP)--far right, Hungarian Democratic Forum (MDF) center-right

Government of Hungary
The President of the Republic, elected by the National Assembly every 5 years, has a largely ceremonial role, but powers also include appointing the prime minister. The prime minister selects cabinet ministers and has the exclusive right to dismiss them. Each cabinet nominee appears before one or more parliamentary committees in consultative open hearings and must be formally approved by the president. The unicameral, 386-member National Assembly is the highest organ of state authority and initiates and approves legislation sponsored by the prime minister. A party must win at least 5% of the national vote to form a parliamentary faction. National parliamentary elections are held every 4 years (the last in April 2002). A 15-member Constitutional Court has power to challenge legislation on grounds of unconstitutionality.
source: http://www.state.gov