Parliamentary System
A parliamentary system is a form of government where the executive branch derives its democratic legitimacy from, and is directly accountable to, the parliament. This system is characterized by the fusion of powers between the executive and legislative branches, contrasting with the separation of powers found in a presidential system.
In a parliamentary system, the head of government, often called the prime minister, is usually the leader of the political party that has the most seats in the parliament. The head of state may be a distinct figure, such as a monarch or a president, who has ceremonial duties. The roles of the head of government and head of state can vary significantly from one country to another.
A notable subtype of the parliamentary system is the Westminster system, named after the Palace of Westminster in London, where the Parliament of the United Kingdom meets. This system is characterized by a strong party discipline and the principle of collective ministerial responsibility, whereby ministers must publicly support all governmental decisions made in Cabinet.
In a parliamentary republic, the republic operates under a parliamentary system where the executive branch derives its legitimacy from the parliament and is accountable to it. This form of government is common in many European countries.
Unitary Parliamentary Republic: A unitary state with a republican form of government, where political authority is vested in the parliament.
Semi-Parliamentary System: In this system, voters elect both members of the legislature and the executive, which may lead to a dual executive structure.
Presidential Parliamentary Republic: This form involves a president who is independent of the legislature but works within a parliamentary system framework.
Parliamentary systems can be found in various forms around the world. The United Kingdom, Canada, India, and Australia follow the Westminster model, while Germany and Italy are examples of parliamentary republics with a president as the head of state.