Prime minister leader, the incoming leader will usually be referred as "prime minister-in-waiting". An example or this situation was in 2016 in the United Kingdom when Theresa May was elected leader of the Conservative Party while David Cameron was still prime minister. Ukraine's constitution (1996) lists the powers, functions and duties of the Prime Minister of Ukraine. Most prime ministers in parliamentary systems are not appointed for a specific term in office and in effect may remain in power through a number of elections and parliaments. For example, Margaret Thatcher was only ever appointed prime minister on "one" occasion, in 1979. She
Prime Minister of New Zealand restrict the term of appointments to the Legislative Council. The title of "prime minister" was used by Richard Seddon after 1901, following New Zealand's self-exclusion from the Federation of Australia. Seddon's immediate successor, William Hall-Jones, was the first to be sworn-in as "prime minister", in 1906. The expanding power of the prime minister was kept in check by the need to build consensus with other leading members of Cabinet and of the governing party, including those who represented various ideological wings of the party. Other institutions, including Parliament itself and the wider state bureaucracy, also acted as limits on prime