Parliamentary Private Secretary to the Prime Minister Bonar Law's Parliamentary Private Secretary, J.C.C. Davidson acted in effect as his Chief of Staff. Margaret Thatcher's downfall from the Conservative Party leadership in 1990 is attributed by many to the actions of her Parliamentary Private Secretary, Peter Morrison, in failing accurately to count votes amongst Conservative backbenchers. Some Parliamentary Private Secretaries to the Prime Minister go on to hold higher office; Lord Dunglass served as Parliamentary Private Secretary under Neville Chamberlain and later went on to serve as Prime Minister in his own right. There can be multiple Parliamentary Private Secretaries to the Prime Minister at a given time.
First Vice Prime Minister of Ukraine to Prime Minister, all office duties of the First Vice Prime Minister are supported by the Secretariat of Cabinet of Ministers. Along with other members of Cabinet of Ministers, the newly appointed First Vice Prime Minister takes one and the same oath of office at a plenary session of the Verkhovna Rada (Ukrainian parliament). According to the Article 10 (Law of Ukraine about the Cabinet of Ministers), a member of Cabinet of Ministers (except for the Prime Minister of Ukraine) who refuses to take the oath is considered as such who refused to accept the post. Every newly appointed member