The New Zealand Parliament<ref>[http://www.govt.nz/ Official government site]</ref> has only one chamber, the House of Representatives, which usually seats 120 Members of Parliament. Parliamentary general elections are held every three years under a form of [[proportional representation]] called Mixed Member Proportional. The 2005 General Election created an 'overhang' of one extra seat, occupied by the Māori Party, due to that party winning more seats in electorates than the number of seats its proportion of the party vote would have given it. The position of Prime Minister falls to the leader of the majority party in Parliament and may be changed at any time at the discretion of the majority party Caucus. | The New Zealand Parliament<ref>[http://www.govt.nz/ Official government site]</ref> has only one chamber, the House of Representatives, which usually seats 120 Members of Parliament. Parliamentary general elections are held every three years under a form of [[proportional representation]] called Mixed Member Proportional. The 2005 General Election created an 'overhang' of one extra seat, occupied by the Māori Party, due to that party winning more seats in electorates than the number of seats its proportion of the party vote would have given it. The position of Prime Minister falls to the leader of the majority party in Parliament and may be changed at any time at the discretion of the majority party Caucus. |