Question: Information:  - The Great Offices of State in the United Kingdom are the four most senior and prestigious posts in the British government. They are the Prime Minister, Chancellor of the Exchequer, Foreign Secretary and Home Secretary. According to convention, when the Prime Minister names his or her Cabinet, either after a general election or a mid-term reshuffle, the first Cabinet ministers to be announced are the Chancellor, the Foreign Secretary and the Home Secretary.  - Her Majesty's Principal Secretary of State for the Home Department, normally referred to as the Home Secretary, is a senior official as one of the Great Offices of State within Her Majesty's Government and head of the Home Office. The office is a British Cabinet level position.  - Head of government is a generic term used for either the highest or second highest official in the executive branch of a sovereign state, a federated state, or a self-governing colony, (commonly referred to as countries, nations or nation-states) who often presides over a cabinet, a group of ministers or secretaries who lead executive departments. The term "head of government" is often differentiated from the term "head of state", (e.g. as in article 7 of the Vienna Convention on the Law of Treaties, article 1 of the Convention on the Prevention and Punishment of Crimes against Internationally Protected Persons, including Diplomatic Agents and the United Nations protocol list), as they may be separate positions, individuals, and/or roles depending on the country.  - Leonard James "Jim" Callaghan, Baron Callaghan of Cardiff, (27 March 1912  26 March 2005) was a British politician who served as the Prime Minister of the United Kingdom from 1976 to 1979 and the Leader of the Labour Party from 1976 to 1980. Callaghan is to date the only politician in history to have served in all four of the "Great Offices of State", having been Chancellor of the Exchequer from 1964 to 1967, Home Secretary from 1967 to 1970, and Foreign Secretary from 1974, until his appointment as Prime Minister in 1976. As Prime Minister, he had some successes, but was chiefly remembered for the "Winter of Discontent" in 197879. During a very cold winter, his battle with trade unions led to massive strikes that seriously inconvenienced the public, leading to his defeat in the polls by Margaret Thatcher.  - Margaret Hilda Thatcher, Baroness Thatcher, (13 October 1925  8 April 2013) was a British stateswoman who was the Prime Minister of the United Kingdom from 1979 to 1990 and the Leader of the Conservative Party from 1975 to 1990. She was the longest-serving British prime minister of the 20th century, and the first woman to have held the office. A Soviet journalist dubbed her The Iron Lady, a nickname that became associated with her uncompromising politics and leadership style. As Prime Minister, she implemented policies that have come to be known as Thatcherism.  - The Prime Minister of the United Kingdom is the head of Her Majesty's Government in the United Kingdom. The prime minister (informal abbreviation: PM) and Cabinet (consisting of all the most senior ministers, most of whom are government department heads) are collectively accountable for their policies and actions to the Monarch, to Parliament, to their political party and ultimately to the electorate. The office is one of the Great Offices of State. The , Theresa May, leader of the Conservative Party, was appointed by the Queen on 13 July 2016.  - The United Kingdom general election of 1979 was held on 3 May 1979 to elect 635 members to the British House of Commons . The Conservative Party , led by Margaret Thatcher ousted the incumbent Labour government of James Callaghan with a parliamentary majority of 44 seats . The election was the first of four consecutive election victories for the Conservative Party , and Thatcher became the United Kingdom 's and Europe 's first female head of government . The previous parliamentary term had begun in October 1974 , when Harold Wilson led Labour to a majority of three seats , but within 18 months he had resigned as prime minister to be succeeded by James Callaghan , and within a year the government 's narrow parliamentary majority had gone . Callaghan had made agreements with the Liberals , the Ulster Unionists , as well as the Scottish and Welsh nationalists in order to remain in power . However , on 28 March 1979 following the defeat of the Scottish devolution referendum , Thatcher tabled a motion of no confidence in James Callaghan 's Labour government , which was passed by just one vote ( 311 to 310 ) , triggering a general election five months before the end of the government 's term . The Labour campaign was hampered by the series of industrial disputes and strikes during the Winter of 1978 - 79 , known as the Winter of Discontent and the party focused its campaign on support for the National Health Service and full employment . After intense media speculation , Callaghan had announced early in the autumn of 1978 that a general election would not take place that year having received private polling data which suggested a parliamentary majority was unlikely . The Conservative campaign employed the advertising agency Saatchi & Saatchi and pledged to control inflation as well as curbing the power of the trade unions . The Liberal Party was damaged by allegations that its former leader Jeremy Thorpe had been involved in a homosexual affair , and had conspired to murder his former lover . The Liberals were now...  - Thatcherism describes the conviction politics, economic, social policy and political style of the British Conservative Party politician Margaret Thatcher, who was leader of her party from 1975 to 1990. It has also been used to describe the beliefs of the British government under Thatcher as Prime Minister from 1979 to 1990, and beyond into the governments of John Major, Tony Blair and David Cameron. An exponent or supporter of Thatcherism is regarded as a Thatcherite.  - A head of state (or chief of state) is the public persona that officially represents the national unity and legitimacy of a sovereign state. In developing the current Constitution of France (1958), former French president Charles de Gaulle said the head of state should embody "the spirit of the nation" (""). In some countries, typically those with parliamentary governments, the head of state is a ceremonial figurehead that does not actually guide day-to-day government activities and may not even be empowered to exercise any kind of political authority (e.g., Queen Elizabeth II in the United Kingdom). In other countries, the head of state is also the head of government, such as in the U.S., where the president is both a public figurehead and the actual highest ranking political leader who, in practice, oversees the executive branch.  - The Chancellor and Under-Treasurer of Her Majesty's Exchequer, commonly known as the Chancellor of the Exchequer, is a senior official within the Government of the United Kingdom and head of Her Majesty's Treasury. The office is a British Cabinet-level position.    Given the information above, choose from the list below the object entity that exhibits the relation 'office contested' with the subject 'united kingdom general election'.  Choices: - chancellor  - head of state  - president  - prime minister  - prime minister of the united kingdom  - secretary of state
Answer:
prime minister of the united kingdom