
Australia's system of government is based on the British Westminster system, a form of parliamentary democracy. The Westminster system is used in several former British colonies, including Canada, New Zealand, and Australia. The Australian system, sometimes called the Washminster model, combines elements of the British Westminster system and the US Washington model. The Australian Parliament, for example, is influenced by the British model in its appearance and function, and the idea of a responsible government accountable to the parliament. The Australian Senate, however, is similar to the US model, with independently governed states working together under a central federal government structure.
| Characteristics | Values |
|---|---|
| System of government | Parliamentary democracy |
| Country | Australia |
| Influences | British, US |
| Name origin | Westminster, London |
| Government chosen by | Democratically elected lower house |
| Head of government | Prime Minister |
| Constitutional monarchy | Yes |
| Head of state | King of Australia |
| Powers of head of state | Given to Governor-General |
| Federation of states | Yes |
| Law-making powers | Shared between parliament, government, and courts |
| Number of members of the House of Representatives | Proportional to the population of the state |
| Sovereign power | Nominal or legal and constitutional holder of executive power |
| Cabinet | Appointed by the sovereign |
| Reserve powers | Held by the sovereign |
| Armed services | Outside of politics and act on the instructions of the government |
| Judiciary | Independent |
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What You'll Learn
- The Westminster system in Australia is a hybrid of the US and British systems
- The Australian Senate's ability to withhold supply from the government
- The role of the constitutional monarch
- The Governor-General's power to dismiss a federal government
- The influence of the British parliamentary model on Australia's federation model

The Westminster system in Australia is a hybrid of the US and British systems
Australia's system of government is based on the British Westminster system. It is a representative democracy where Australians vote for members of parliament to make laws on their behalf. The Westminster system is a form of government bequeathed to former British colonies, with some exceptions like the United States and Cyprus.
The Australian Parliament has been referred to as a 'Washminster' model, a portmanteau of Washington and Westminster, indicating a combination of influences from the US and British systems of government. The British influence is evident in the appearance and function of the Australian Parliament, with the idea of responsible government – a government elected by the people and accountable to the Parliament – being a significant contribution. Additionally, Australia's version of the separation of powers – the division of power between the Parliament, the executive, and the judiciary – is inspired by the British model.
The US system's influence is noticeable in the overall model of the Australian federation, with independently governed states working together under a central federal government structure. The representative structure of the Australian Senate closely resembles the US model, including the power to withhold supply from the government, similar to the UK's House of Lords before 1911. This power allows the Senate to severely restrict the government's ability to act and can trigger a federal election if a solution is not negotiated.
While the Westminster system serves as the foundation of Australia's government, the country has adapted and combined it with other influences to create a unique hybrid system that suits its local conditions and history.
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The Australian Senate's ability to withhold supply from the government
Australia's system of government is based on the British Westminster system, a form of parliamentary democracy. In the Westminster system, the government is chosen by the democratically elected lower house, and the head of government is the Prime Minister, who leads a Cabinet responsible to the lower house.
The Australian Senate is the upper house of the Parliament of Australia, with the House of Representatives being the lower house. The Senate has the same legislative power as the House of Representatives, except that it may not originate or amend taxing or appropriation bills; it may only pass or reject them.
The Australian Senate has the ability to withhold supply from the government, a power similar to that held in the UK until 1911 by the House of Lords. This means that the Senate can block supply, effectively preventing the government from lawfully spending money. A government that has lost supply is severely restricted in its ability to act. This power to block supply was exercised in the 1975 Australian constitutional crisis. During this crisis, the Opposition used its numbers in the Senate to defer supply bills, refusing to deal with them until an election was called for both Houses of Parliament, which they hoped to win. The Prime Minister at the time, Gough Whitlam, contested the legitimacy of the blocking and refused to resign.
The crisis brought to light two conflicting Westminster conventions: firstly, that a government may continue to govern for as long as it has the support of the lower house, and secondly, that a government that has lost supply must either resign or be dismissed. Since the governor-general can technically dismiss a federal government at any time, the loss of supply is sometimes considered a suitable trigger for a dismissal. However, this is controversial because it goes against the Westminster tradition of government by a party with the confidence of the lower house, not the upper house like the Senate.
The ability of the Australian Senate to withhold supply from the government has been a topic of debate, with some arguing that the Senate should not have this power. One argument is that the existing provisions do not provide a practical process for timely dispute resolution, and they do not hold the Senate accountable for its actions. Another argument is that the Senate's power to block supply can be used as a political tool, with the potential for an opposition party to use it to gain power. However, removing this power would likely not attract bipartisan support and would therefore be unsuccessful at a referendum.
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The role of the constitutional monarch
Australia's system of government is based on the British Westminster system, which is a form of parliamentary democracy. Australia is a constitutional monarchy, with a hereditary monarch serving as the country's sovereign and head of state. The current monarch is King Charles III, who has reigned since 8 September 2022.
The Governor-General has certain reserve powers, which they may exercise independently or contrary to the advice of the government. For example, the Governor-General can dismiss the federal government, as happened during the 1975 constitutional crisis when Governor-General Sir John Kerr dismissed the government of Gough Whitlam. The monarch has also been personally involved in issuing letters-patent for the creation of Australian honours.
The constitutional monarchy in Australia is a legacy of British colonial rule. Australia, as a former British colony, adopted the Westminster system of government upon gaining self-government. The monarchy in Australia is modelled on the British system, with the monarch acting as a symbolic figure who is "above politics" and acts on the advice of the Prime Minister.
The continued presence of the monarchy in Australia has been a subject of debate. To some, the Crown has symbolised the dispossession of Indigenous lands and the violation of their sovereignty. However, the Crown has also been seen as a protector of Indigenous rights, with several petitions made to the monarch by Indigenous leaders. The royal symbols and the perception of the monarchy's positive role in national life have also been criticised as akin to propaganda, reinforcing the social and political power of the royals.
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The Governor-General's power to dismiss a federal government
Australia's system of government is based on the British Westminster system, a form of parliamentary democracy. In this system, the government is chosen by the democratically elected lower house, and the head of government is the Prime Minister. A constitutional monarch, if one exists, is "above politics" and acts on the advice of the Prime Minister.
In Australia, the King is the constitutional monarch and head of state, but does not have absolute power and must follow the Australian Constitution. The King gives his powers to the Governor-General, who acts as the monarch's representative and exercises certain royal prerogative powers and functions. The Governor-General is entitled to various privileges by virtue of holding the office, including the right to live in Government House (also known as Yarralumla) and access to official vehicles.
The Governor-General has the power to dismiss a federal government or Prime Minister in certain circumstances. This is one of the Governor-General's reserve powers, which are generally accepted to include the power to dismiss a Prime Minister that has lost the support of the majority of members of the House of Representatives or has broken the law. The Governor-General can also refuse a request from a Prime Minister to call an election. The use of reserve powers is rare and is based on convention and tradition, rather than being explicitly listed in the Constitution.
The most prominent use of the reserve powers to dismiss a federal government occurred in the 1975 Australian constitutional crisis, also known as the Dismissal. In this instance, Governor-General Sir John Kerr dismissed the government of Gough Whitlam and appointed opposition leader Malcolm Fraser as Prime Minister while an election was held. Kerr acted following the blocking of supply by the opposition-controlled Senate, arguing that this gave him the right and duty to dismiss the government when they did not resign or advise an election. The event remains one of the most highly debated and controversial in Australian political history.
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The influence of the British parliamentary model on Australia's federation model
Australia's system of government is based on the British Westminster system. The Westminster system is a form of parliamentary democracy used in countries that were formerly part of the British Empire, such as Canada, Australia, and New Zealand.
Before 1901, Australia was made up of six partly self-governing colonies that were modelled on the British parliamentary system. When the Australian federation model was developed in the 1890s, the British parliamentary model had a significant influence on its appearance and function. The concept of responsible government, where the government is elected by the people and accountable to the Parliament, is a notable British contribution to the Australian system. Additionally, Australia's version of the separation of powers, which divides power between the Parliament, the executive, and the judiciary, is also influenced by the British model.
The Westminster system in Australia includes certain features such as a constitutional monarchy, where the King is the head of state but does not hold absolute power and is required to follow the Australian Constitution. The King delegates his powers to the Governor-General, who can technically dismiss the federal government at any time. The government is chosen by the democratically elected lower house, and it must maintain the support of the majority of its members to remain in power. The head of government is the Prime Minister, who leads a Cabinet responsible to the lower house.
The Australian Senate, as the second chamber of Parliament, is unique in its ability to withhold supply from the government, a power similar to that previously held by the UK's House of Lords. This power significantly restricts the government's ability to act and can trigger a federal election or even the dismissal of the government by the Governor-General, as seen in the 1975 Australian constitutional crisis.
While the British parliamentary model has had a significant influence on Australia's federation model, it is important to note that Australia's system also incorporates elements from other models, such as the US system, resulting in a unique hybrid system colloquially known as "Washminster".
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Frequently asked questions
The Westminster system of government is the name given to the system of parliamentary democracy used in countries with strong historical ties to the UK, such as Britain, Canada, Australia, and New Zealand. The system is based on representative democracy, where Australians vote for members of parliament to make laws on their behalf. The government is chosen by the democratically elected lower house and requires the support of the majority of that chamber to stay in power.
The key features of the Westminster system in Australia include:
- A constitutional monarchy, with a monarch who is "above politics" and acts on the advice of the prime minister. In Australia, the King is the head of state and gives his powers to the Governor-General.
- A federation of states, where power is shared between the national government and local governments.
- Separation of powers between the parliament, the government, and the judiciary.
- A sovereign or head of state who holds reserve powers, including the power to appoint and dismiss governments, appoint cabinet ministers, appoint diplomats, declare war, and sign treaties.
- A loyal opposition, led by the leader of the party with the second largest number of seats in the lower house.
The Westminster system varies from country to country, and Australia has some unique features. Australia's Parliament has been referred to as a "`Washminster` model", combining elements of the British Westminster model and the US "Washington" model. The Australian Senate draws influences from the US model, with independently governed states working together under a central federal government structure. Additionally, the Australian Senate has the ability to withhold supply from the government, a power similar to that held by the UK's House of Lords until 1911.




























