Legislative authority is vested in the unicameral Landtag, made up of 25 members elected for maximum four-year terms according to a proportional representation formula. Fifteen members are elected from the Oberland (Upper Country or region) and ten from the Unterland (Lower Country or region). Parties must receive at least 8% of the national vote to win seats in parliament, i.e., enough for two seats in the 25-seat legislature. Parliament proposes and approves a government, which the Prince formally appoints. Parliament may also pass votes of no confidence in the entire government or individual members.