Bulgaria elects on the national level a head of state—the president—and a legislature. The president is elected for a five-year term directly by the people. The National Assembly (Narodno Sabranie) has 240 members elected for a four-year term by proportional representation in multi-seat constituencies with a 4% threshold. Bulgaria has a multi-party system in which often no one party has a chance of gaining power alone and parties must work with each to form governments.