Prime Minister of New Zealand signed a number of international treaties. In 1967, Keith Holyoake became the first New Zealand prime minister to select candidates for the position of governor-general without any involvement of the British government. Holyoake advised the monarch, Queen Elizabeth II, to appoint Sir Arthur Porritt, the first New Zealand–born governor-general. After the mixed-member proportional (MMP) system was introduced in 1996, prime ministers have had to manage minority governments. The skill of MMP management was exemplified by Helen Clark's nine years as prime minister (1999–2008), when her Labour Party remained in power thanks to a range of confidence and supply agreements with
Prime Minister of the United Kingdom statutory duties as Prime Minister, his name occurs in no Acts of Parliament, and though holding the most important place in the constitutional hierarchy, he has no place which is recognised by the laws of his country. This is a strange paradox." In 1905 the position was given some official recognition when the "Prime Minister" was named in the order of precedence, outranked, among non-royals, only by the Archbishops of Canterbury and York, the Moderator of the General Assembly of the Church of Scotland and the Lord Chancellor. The first Act of Parliament to mention the Premiership – albeit in