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.
Prime Minister of Iran he was voted down by the then left-leaning majority of the parliament, which then forced their own preferred prime minister to Khamenei, namely Mir-Hossein Mousavi. The dispute was finally ended by interference of the Supreme Leader, Ayatollah Khomeini, who advised the president to accept Mousavi. Mousavi served under the title until 1989, when the constitution was amended to remove the title of Prime Minister and divide his responsibilities between the president and a newly created title of First Vice President. Prime Minister of Iran The Prime Minister of Iran was a political post in Iran that had existed during several