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 the Netherlands Prime Minister was formalized in the Dutch Constitution for the first time. According to the Constitution of the Netherlands, the Government is constituted by the King and the ministers. The Constitution stipulates the Prime Minister chairs the Council of Ministers (article 45) and is appointed by royal decree (article 43). The royal decree of their own appointment and those of the other ministers are to be countersigned by the Prime Minister (article 48). The Council of Ministers is nowadays not anymore attended by the King. The Prime Minister chairs the weekly meetings of the Council of Ministers and has the