A leader of a party is chosen by the party, following an internal constitution unique to each party that comprises a framework to elect or appoint a leader. The leader, if he or she does not already have a seat, must then win a seat in a by-election or general election to sit in the Assembly. If a leader of a party does not have a seat, he or she must sit in the legislature gallery. While sitting in the gallery a premier cannot exercise any legislative powers.