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 they remain Privy Counsellors, but the Prime Minister decides which of them are summoned to meetings. The Prime Minister is responsible for producing and enforcing the Ministerial Code. By tradition, before a new Prime Minister can occupy 10 Downing Street, they are required to announce to the country and the world that they have "kissed hands" with the reigning monarch, and have thus become Prime Minister. This is usually done by saying words to the effect of: Her Majesty the Queen "[His Majesty the King]" has asked me to form a government and I have accepted. Throughout the United Kingdom,