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
Deputy Prime Minister of Canada role, few to no research sources exist to provide a complete list of everyone who was ever named as acting prime minister. However, John Diefenbaker's selection of Ellen Fairclough as acting prime minister on February 19 and 20, 1958, is historically noteworthy as Fairclough was the first woman ever designated. Prior to the creation of this position, the position of "Senior Minister" was a ceremonial position used in a similar manner, heading the order of precedence. Upon the absence of the Prime Minister, the Senior Minister would become the Acting Prime Minister. Deputy Prime Minister of Canada The Deputy Prime