Prime Minister of the United Kingdom constitutional tradition. First, the Act removed the Sovereign from the election process and the choice of Prime Minister. Slowly evolving for 100 years, this convention was confirmed two years after the passage of the Act. In 1834, King William IV dismissed Melbourne as Premier, but was forced to recall him when Robert Peel, the King's choice, could not form a working majority. Since then, no Sovereign has tried to impose a Prime Minister on Parliament. Second, the Bill reduced the Lords' power by eliminating many of their pocket boroughs and creating new boroughs in which they had no influence. Weakened,
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