Romania has a multi-party system, with several political parties representing a range of ideologies. The main parties include the Social Democratic Party (PSD), which is center-left, and the National Liberal Party (PNL), a center-right party. Other notable parties are the Union Save Romania (USR), focused on anti-corruption and reform, and the Hungarian Democratic Union of Romania (UDMR), which represents the Hungarian minority. Elections in Romania are held every four years, allowing citizens to vote for their preferred parties. The political landscape can change significantly between elections, influenced by public opinion, economic conditions, and social issues.