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
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