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
Margaret Thatcher returned to 10 Downing Street in late November 2009 for the unveiling of an official portrait by artist Richard Stone, an unusual honour for a living former Prime Minister. Stone was previously commissioned to paint portraits of the Queen and Queen Mother. On 4 July 2011, Thatcher was to attend a ceremony for the unveiling of a statue to Ronald Reagan, outside the US Embassy in London, but was unable to attend due to her frail health. She last attended a sitting of the House of Lords on 19 July 2010, and on 30 July 2011 it was announced that