A prime minister is the most senior minister of cabinet in the executive branch of government in a parliamentary system. The position is usually held by, but need not always be held by, a politician. In many systems, the prime minister selects and can dismiss other members of the cabinet, and allocates posts to members within the Government. In most systems, the prime minister is the presiding member and chairman of the cabinet. In a minority of systems, notably in semi-presidential systems of government, a prime minister is the official who is appointed to manage the civil service and execute the directives of the president.
In parliamentary systems fashioned after the Westminster system, the prime minister is the presiding and actual head of the government and head of the executive branch. In such systems, the head of state or the head of state's official representative (i.e. the monarch, president, or governor-general), although officially the head of the executive branch, in fact holds a ceremonial position. The prime minister is often, but not always, a member of parliament and is expected with other ministers to ensure the passage of bills through the legislature. In some monarchies the monarch may also exercise executive powers (known as the royal prerogative) which are constitutionally vested in the crown and can be exercised without the approval of parliament.
As well as being head of government, a prime minister may have other roles or titles – the Prime Minister of the United Kingdom, for example, is also First Lord of the Treasury and Minister for the Civil Service.[1] Prime ministers may take other ministerial posts – for example during the Second World War Winston Churchill was also Minister of Defence (although there was then no Ministry of Defence). The Prime Minister of Australia, Gough Whitlam, was famous for forming his cabinet entirely of himself and his deputy as soon as the overall result of the 1972 federal election was beyond doubt (see First Whitlam Ministry).
The first actual usage of the term prime minister or Premier Ministre was used by Cardinal Richelieu when in 1625 he was named to head the royal council as prime minister of France. Louis XIV and his descendants generally attempted to avoid giving this title to their chief ministers. The term prime minister in the sense that we know it originated in the 18th century in the United Kingdom.[citation needed] Since medieval times monarchs of England and the United Kingdom had ministers in whom they placed special trust and who were regarded as the head of the government. Examples were Thomas Cromwell under Henry VIII; William Cecil, Lord Burghley under Elizabeth I; Clarendon under Charles II and Godolphin under Queen Anne. These ministers held a variety of formal posts, but were commonly known as "the minister," the "first minister" and finally the "prime minister."
The power of these ministers depended entirely on the personal favour of the monarch. Although managing the parliament was among the necessary skills of holding high office, they did not depend on a parliamentary majority for their power. Although there was a cabinet, it was appointed entirely by the monarch, and the monarch usually presided over its meetings. When the monarch grew tired of a first minister, he or she could be dismissed, or worse: Cromwell was executed and Clarendon driven into exile when they lost favour. Kings sometimes divided power equally between two or more ministers to prevent one minister becoming too powerful. Late in Anne's reign, for example, the Tory ministers Harley and St John shared power.
In the mid 17th century, after the English Civil War and the Protectorate, Parliament had strengthened its position and it emerged even more powerful after the Glorious Revolution of 1688. The monarch could not establish any law or impose any tax without its permission. Thus it has been said that the House of Commons became a part of the government and it has been only a further step of this development that a new kind of prime minister should emerge. This turning point in the evolution of the prime ministership came with the death of Anne in 1714 and the accession of George I. George spoke no English, spent much of his time at his home in Hanover, and had neither knowledge of nor interest in the details of English government. In these circumstances it was inevitable that the king's first minister would become the de facto head of the government. From 1721 this was the Whig politician Robert Walpole, who held office for twenty-one years. Walpole chaired cabinet meetings, appointed all the other ministers, dispensed the royal patronage and packed the House of Commons with his supporters. Under Walpole, the doctrine of cabinet solidarity developed. Walpole required that no minister other than himself have private dealings with the king, and also that when the cabinet had agreed on a policy, all ministers must defend it in public or resign. As a later prime minister, Lord Melbourne, said: "It matters not what we say, gentlemen, so long as we all say the same thing."
Walpole always denied that he was "prime minister," and throughout the 18th century parliamentarians and legal scholars continued to deny that any such position was known to the Constitution. The title was first referred to on government documents during the administration of Benjamin Disraeli but did not appear in the formal British Order of precedence until 1905. George II and George III made strenuous efforts to reclaim the personal power of the monarch, but the increasing complexity and expense of government meant that a minister who could command the loyalty of the Commons was increasingly necessary. The long tenure of the wartime Prime Minister Pitt the Younger (1783–1801), combined with the mental illness of George III, consolidated the power of the post.
The prestige of British institutions in the 19th century and the growth of the British Empire saw the British model of cabinet government, headed by a prime minister, widely copied, both in other European countries and in British colonial territories as they developed self-government. In some places alternative titles such as "premier," "chief minister," "first minister of state", "president of the council" or "chancellor" were adopted, but the essentials of the office were the same. By the late 20th century the majority of the world's countries had a prime minister or equivalent minister, holding office under either a constitutional monarchy or a ceremonial president. The main exceptions to this system have been the United States and the presidential republics in Latin America, modelled on the U.S. system, in which the president directly exercises executive authority.
The post of prime minister may be encountered both in constitutional monarchies (such as Belgium, Denmark, Japan, the Netherlands, Norway, Malaysia, Spain,[2] Sweden, Canada, Australia, New Zealand, and the United Kingdom), and in republics in which the head of state is an elected official (such as Finland, France, Germany, Greece, India, Italy, Ireland, Portugal, Montenegro, Croatia, Bulgaria, Romania, Serbia, Turkey) or an unelected official (such as Singapore before 1993) with varying degrees of real power. This contrasts with the presidential system, in which the president (or equivalent) is both the head of state and the head of the government. See also "First Minister", "Premier", "Chief Minister", "Chancellor", "Taoiseach" and "Secretary of State": alternative titles usually equivalent in meaning to, or translated as, "prime minister". The head of government of the People's Republic of China is referred to as the Premier.
In some presidential or semi-presidential systems, such as those of France, Russia or South Korea, the prime minister is an official generally appointed by the president but usually approved by the legislature and responsible for carrying out the directives of the president and managing the civil service. (The premier of the Republic of China is also appointed by the president, but requires no approval by the legislature. Appointment of the prime minister of France requires no approval by the parliament either, but the parliament can force the resignation of the government.) In these systems, it is possible for the president and the prime minister to be from different political parties if the legislature is controlled by a party different from that of the president. When it arises, such a state of affairs is usually referred to as (political) cohabitation.
In parliamentary systems a prime minister can enter into office by several means.
The position, power and status of prime ministers differ depending on the age of the constitution.