President of the European Parliament Jerzy Buzek, former Prime Minister of Poland and member of Solidarity Electoral Action, was elected as the first president from the central and eastern European countries which joined in the 2000s (more precisely, he is the first person from a country that joined the EU after 1986 to hold the post). The two major factions of the European Parliament, the EPP and the S&D, have reached a formal agreement to share the presidency under the 2009–2014 term. Under the agreement, Jerzy Buzek will be president in the first half of the term and a S&D member would be elected in
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