The National Assembly is the parliament of Hungary. The unicameral body consists of 199 members elected to four-year terms. Election of members is done using a semi-proportional representation: a mixed-member majoritarian representation with partial compensation via transfer votes and mixed single vote; involving single-member districts and one list vote; parties must win at least 5% of the popular vote in order to gain list seats. The Assembly includes 25 standing committees to debate and report on introduced bills and to supervise the activities of the ministers. The Constitutional Court of Hungary has the right to challenge legislation on the grounds of constitutionality.

The Constitutional Court of Hungary is a special court of Hungary, making judicial review of the acts of the Parliament of Hungary. The official seat of the Constitutional Court is Budapest. Until 2012 the seat was Esztergom.