Amendment to the Constitution requires a
referendum in which the amending act is approved by a majority in at least four states, as well as a nationwide majority: a
double majority. This reflects the commitment to
federalism within the constitution, to ensure that any changes to the document cannot be approved solely with the support of the more populous states.
Past referendums and amendments Forty-five proposals to amend the Constitution have been voted on at referendums, only eight of which have been approved. The eight proposals that have been approved are: •
1906 –
Senate electionsamended section 13 to slightly alter the length and dates of senators' terms of office. •
1910 –
State debtsamended section 105 to allow the Commonwealth to take over debts incurred by a state following Federation. •
1928 –
State debtsinserted section 105A to ensure the constitutional validity of the financial agreement reached between the Commonwealth and state governments in 1927. •
1946 –
Social servicesinserted section 51(xxiiiA) to extend the power of the Commonwealth over a range of social services. •
1967 –
Aboriginal Australiansamended section 51(xxvi) to allow the Commonwealth to make laws for Indigenous Australians and repealed
section 127 so that Indigenous Australians would be included in population counts for constitutional purposes. •
1977 –
Senate casual vacancies – amended section 15 to ensure casual vacancies in the Senate would be filled by a member of the same political party. •
1977 –
Referendums – amended section 128 to allow residents of Australian
territories to vote in referendums. •
1977 –
Retirement of Judges – amended section 72 to mandate a retirement age of 70 for judges in
federal courts. This low success rate reflects a reluctance of Australian voters to approve changes, rather than the onerous requirements of section 128; only 3 of the 36 failed referendums received a national majority of votes without a majority of states. All but one of the successful referendums also received a majority in each of the states, with exception of the 1910 State Debts referendum which succeeded despite a no vote of 66% in New South Wales.
Proposals for amendment via British legislation In the first decades after Federation, before Australia's constitutional relationship with the United Kingdom had evolved, two serious attempts were made to amend the constitution via a British act of Parliament, in order to circumvent the referendum provisions of section 128: • In 1917, during World War I, Prime Minister
Billy Hughes sought to amend the Constitution to allow for the constitutionally required federal election to be postponed, thereby extending the term of his government. The House of Representatives passed a motion by 34 votes to 17 calling on the British Parliament to amend the
Constitution Act; Hughes had already secured the support of the British Government for his tactic. However, the equivalent motion in the Senate was defeated after
Nationalist senators
Thomas Bakhap and
John Keating crossed the floor. Hughes then called the
1917 federal election, which saw his government re-elected. • In 1934, the Western Australia Government petitioned the British Parliament to amend the
Constitution Act to allow it to withdraw from the Federation. This followed
a 1933 referendum in which the state voted to secede from the rest of Australia, the results of which were rejected by the Federal Government. The petition, presented by former premier
Hal Colebatch, was heard by a joint
select committee of the
House of Commons and
House of Lords, which rejected it on the grounds that it broke the principle of non-interference in
Dominion matters recently codified in the
Statute of Westminster 1931. Existing major amendment proposals Multiple ongoing debates exist regarding changes to the Australian Constitution. These include debates on the inclusion of a preamble, proposals for an Australian republic, and formal recognition of Indigenous Australians through a
Voice to Parliament.
Inclusion of a preamble The British act containing the Constitution includes a
preamble drafted during the
1897–8 constitutional conventions. A preamble can be used when interpreting the Constitution, but only to the extent of clarifying an existing ambiguity. Since the 1980s, there has been in increasing calls to change or replace this preamble. Such a preamble could reflect some universal values Australians are committed to and
recognise the special place of Indigenous Australians in the nation. It could also end with words of local enactment (e.g. "We the Australian people commit ourselves to this Constitution"), confirming that the constitution is
autochthonous (derives its authority from the Australian people), rather than based on the authority of the UK Parliament. Despite receiving several submission, the 1988 Constitutional Commission rejected such a change due to the difficulty of drafting a proposal that would be accepted by all Australians and recognise Indigenous Australians, as well as their view that such a change should not be done unless the entire constitution was rewritten. Following this, the 1998 Constitution Convention recommended the inclusion of a new preamble, alongside their recommendation that Australia become a republic. However, this recommendation was ultimately taken up by a
constitutional monarchist, then prime minister,
John Howard. A draft, penned by Howard with the assistance of the poet
Les Murray, was heavily criticised by the Labor party, Indigenous leaders and the wider public. A modified version was released one day before the passage of legislation that authorised the 1999 referendum. This proposal was again opposed by the Labor party and was eventually defeated with a 60% no vote. While debate around the preamble was minor compared with the debate around the republic, concerns were raised by opponents about the justiciability of the preamble, especially by those that opposed the inclusion of human rights guarantees in the document and by those who felt the court had become unduly "
activist" in the wake of the
Mabo decision.
Republic proposals Debates on whether Australian should become a republic have existed since Federation. In
November 1999 a referendum was held as to whether the Queen and the Governor-General ought be removed from the Constitution, to be replaced with a president. The referendum rejected the change.
Indigenous recognition and voice Since 1910, there have been calls for constitutional reform to recognise Indigenous Australians. In 1967, the Constitution was amended providing the Commonwealth with the power to legislate for all Indigenous Australians by removing the restriction preventing the Commonwealth from legislating in states. At the same time, a limitation on including all Indigenous Australians in population counts for constitutional purposes was removed, which in 1967 was relevant only to section 24. Since those reforms, other proposals have emerged. Guaranteed parliamentary representatives, a constitutionally recognised voice, and an inclusion of Indigenous Australians in a preamble to the Constitution are all proposals that have been made to reform the Australian Constitution to recognise Indigenous Australians. In his
Closing the Gap speech in February 2020, Prime Minister
Scott Morrison reinforced the work of the Referendum Council, rejecting the idea of merely symbolic recognition, supporting a voice co-designed by Aboriginal and Torres Strait Islander people, "using the language of listening and empowerment". The Labor Party has supported a voice enshrined in the Constitution for a long time, and so have many of Australia's left-leaning minor parties. However, many right-wing and regional groups opposed the change. A referendum to prescribe a Voice to Parliament in the constitution failed in 2023.
Other Labor Party supported amendments Alongside support for an Australian republic and the Voice to Parliament, the 2023 National Platform of the Labor Party also supports amendments to: •
recognise local government • implement
fixed four-year terms for both the Senate and the House of Representatives (as a change from the current fixed six-year term for senators, with half elected each three years, and an unfixed maximum three-year term for members of parliament) • reform "matters of territory rights" The platform states that the later two reforms should be progressed through a new independent Australian Constitutional Commission.
Free Speech As of 2025,
Gerard Rennick People First,
Pauline Hanson's One Nation and the
Libertarian Party support holding a referendum to constitutionally protect the right to
freedom of speech. ==Cultural impact==