{"id":"C1948A00016","name":"Representation Act 1948","slug":"representation-act-1948","collection":"act","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":"16 of 1948","makingDate":null,"administeringDepartment":null,"currentVersion":{"id":4338,"registerId":"commonwealth-C1948A00016-current","compilationNumber":null,"startDate":"2026-03-30","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Representation Act 1948","content":"REPRESENTATION.\n\nNo. 16 of 1948.\n\nAn Act to increase the Number of Senators and for other purposes.\n\n\\[Assented to 18th May, 1948.\\]\n\nPreamble.\n\nWHEREAS it is provided by section seven of the Constitution that, until the Parliament otherwise provides, there shall be six senators for each Original State, and that the Parliament may\n\n  \n\nmake laws increasing or diminishing the number of senators for each State, but so that equal representation of the several Original States shall be maintained and that no Original State shall have less than six senators:\n\nAnd whereas it is provided by section fourteen of the Constitution that, whenever the number of senators for a State is increased or diminished, the Parliament may make such provision for the vacating of the places of senators for the State as it deems necessary to maintain regularity in the rotation:\n\nAnd whereas it is provided by section twenty-four of the Constitution that—\n\n(a) the House of Representatives shall be composed of members directly chosen by the people of the Commonwealth;\n\n(b) the numbers of such members shall be, as nearly as practicable, twice the number of senators; and\n\n(c) the number of members chosen in the several States shall be in proportion to the respective numbers of their people, and shall, until the Parliament otherwise provides, be determined, whenever necessary, in the manner specified in that section, but that, notwithstanding anything in that section, five members at least shall be chosen in each Original State:\n\nAnd whereas the Parliament has. by the Representation Act 1905–1938, made other provision for determining the number of members chosen in the several States:\n\nBe it therefore enacted by the King’s Most Excellent Majesty, the Senate, and the House of Representatives of the Commonwealth of Australia, as follows:—\n\nShort title.\n\n1. This Act may be cited as the Representation Act 1948.\n\nCommencement.\n\n2. This Act shall come into operation on the day on which it receives the Royal Assent.\n\nDefinitions.\n\n3. In this Act, unless the contrary intention appears—\n\n“casual vacancy” means a vacancy in the place of a senator occurring before the expiration of his term of service;\n\n“sitting senator” means a senator elected at an election previous to the election referred to in section five of this Act.\n\nNumber of senators.\n\n4. From and including the day of the first meeting of the Parliament after the first dissolution of the House of Representatives occurring after the commencement of this Act, the number of senators for each State shall be ten.\n\nElection of senators.\n\n5.—(1.) At the first election of senators held after the commencement of this Act, the number of senators chosen to represent each State shall be seven, together with such number of senators (if any) for that State, as are to be chosen to fill casual vacancies which are long casual vacancies within the meaning of the Senate Elections Act 1903–1948.\n\n  \n\n(2.) If at that election any senators are to be chosen to fill casual vacancies, the provisions of the Senate Elections Act 1903-1948 shall apply in relation to the filling of those casual vacancies but, in the application of those provisions to the filling of a long casual vacancy, all the places to be filled shall be deemed to be periodical vacancies.\n\n(3.) Of the senators chosen at the election (other than any sitting senator), the first two senators elected shall be chosen for a term of six years and shall hold their places from and including the day referred to in the last preceding section but, for the purpose of maintaining regularity in the rotation of senators, the places of those two senators shall not become vacant until the first day of July, One thousand nine hundred and fifty-six.\n\n(4.) Of the senators chosen at the election (other than any sitting senator or any senator elected to fill a long casual vacancy), the last two senators elected shall be chosen for a term of six years and shall hold their places from and including the day referred to in the last preceding section but, for the purpose of maintaining regularity in the rotation of senators, the places of those two senators shall, subject to this section, become vacant on the first day of July, One thousand nine hundred and fifty-three.\n\n(5.) Each other senator chosen at the election (not being a senator elected to fill a long casual vacancy) shall fill a periodical vacancy arising on the first day of July, One thousand nine hundred and fifty.\n\n(6.) If the sixth or seventh senator elected is a sitting senator, or if both the sixth and seventh senators elected are sitting senators, then, for the purpose of maintaining regularity in the rotation of senators—\n\n(a) the place of that senator or the places of those senators (being a place or places which, but for this sub-section, would, become vacant on the first day of July, One thousand nine hundred and fifty-six) shall become vacant on the first day of July, One thousand nine hundred and fifty-three; and\n\n(b) of the senators to whom sub-section (4.) of this section applies, the place of the first senator elected, or the places of both those senators, as the case requires (being a place or places which, but for this sub-section, would become vacant on the first day of July, One thousand nine hundred and fifty-three), shall not become vacant until the first day of July, One thousand nine hundred and fifty-six.\n\nProvision in the case of a double dissolution.\n\n6. If the dissolution of the House of Representatives referred to in section four of this Act is a dissolution at which the Senate and the House of Representatives are dissolved simultaneously, the provisions of sub-section (1.) of the last preceding section shall have effect as if the word “ten” were substituted for all the words from and including the word “seven” and the provisions of the succeeding sub-sections of that section shall not have effect.\n\n  \n\nReckoning of parliamentary allowances to certain senators.\n\n7. The allowances payable under the Parliamentary Allowances Act 1920–1947 to the senators to whom sub-section (3.) or (4.) of section five of this Act applies shall be reckoned from and including the day referred to in section four of this Act.\n\nDetermination of number of members of the House of Representatives.\n\n8.—(1.) The last determination made by the Chief Electoral Officer, prior to the commencement of this Act, under section nine of the Representation Act 1905-1938, of the number of members of the House of Representatives to be chosen in the several States, shall not have effect.\n\n(2.) Forthwith after the commencement of this Act, the Chief Electoral Officer shall make a determination in accordance with section ten of the Representation Act 1905–1938 of the number of members of the House of Representatives to be chosen in the several States and, for the purpose of the making of that determination, the number of senators shall be deemed to be sixty.","sortOrder":0}],"analysis":{"issue_detection":{"absurdities":[{"type":"other","section":"Section 4 & Section 8(2)","severity":"medium","reasoning":"The Constitution requires House members to be 'as nearly as practicable, twice the number of senators' (s.24). Using a deemed 60 senators to calculate House seats while the real senate remains at 36 creates a House sized to a phantom Senate, potentially conflicting with the constitutional nexus requirement during the transitional period.","confidence":0.82,"description":"Section 4 increases the number of senators per State to ten (giving 60 total), but Section 8(2) directs the Chief Electoral Officer to make a determination 'forthwith' using a deemed senator count of sixty — which is exactly what section 4 already provides. The deemed figure is therefore redundant on its face, but more critically it applies 'forthwith after commencement' while section 4's increase only takes effect at the first meeting of Parliament after the first dissolution. Between commencement and that dissolution, the actual senator count is still 36, not 60. The deemed figure of 60 is used to calculate House seats before the Senate actually reaches 60, meaning the House is sized for a Senate that does not yet legally exist."},{"type":"self_contradicting","section":"Section 5(3)","severity":"medium","reasoning":"The Act commenced 18 May 1948. The first meeting of Parliament referred to in s.4 would occur some time after that. If senators hold their places from the day in s.4 (which must be at least several months after commencement) until 1 July 1956, the actual tenure could be close to eight years, not six. The Act explicitly calls it a 'term of six years' while simultaneously specifying a vacancy date that produces a longer term. This is an internal self-contradiction within the same sub-section.","confidence":0.85,"description":"Section 5(3) says the first two senators elected shall be 'chosen for a term of six years' but then immediately states their places shall not become vacant until 1 July 1956 — which is eight years after the 1948 commencement date. A 'term of six years' and a vacancy date eight years after commencement are irreconcilable on their face."},{"type":"self_contradicting","section":"Section 5(4)","severity":"medium","reasoning":"The Act states these senators are 'chosen for a term of six years' yet the fixed vacancy date of 1 July 1953 means their actual tenure from the s.4 commencement day would be roughly three to four years. The label 'term of six years' is directly contradicted by the fixed expiry date within the same sub-section.","confidence":0.85,"description":"Similarly to s.5(3), s.5(4) designates the last two senators elected as being 'chosen for a term of six years' with places becoming vacant on 1 July 1953. If those places are held 'from and including the day referred to in the last preceding section' (i.e., the first meeting of Parliament after the first dissolution post-commencement, which realistically falls in late 1949 or 1950), a vacancy date of 1 July 1953 produces a term of approximately three to four years — not six."},{"type":"impossible_compliance","section":"Section 6","severity":"high","reasoning":"The Constitution (s.13) requires senators to be divided into two classes rotating every three years. After a double dissolution all ten senators per State are elected simultaneously, and the Constitution requires Parliament to provide for rotation. Section 6 nullifies all the sub-sections of s.5 that perform this function without substituting any alternative mechanism, creating a constitutional compliance vacuum.","confidence":0.78,"description":"Section 6 provides that in the event of a double dissolution, s.5(1) shall have effect as if 'ten' were substituted for 'seven', meaning all ten senators per State are chosen at the election. However, the succeeding sub-sections of s.5 (which govern the term lengths, rotation, and sitting senator provisions) 'shall not have effect.' This leaves no mechanism whatsoever for allocating those ten senators into the rotation classes required by the Constitution (s.13), making it impossible to maintain the required regularity in rotation after a double dissolution."},{"type":"circular_definition","section":"Section 3 — definition of 'sitting senator'","severity":"low","reasoning":"The definition of 'sitting senator' is keyed to the s.5 election, and the s.5 election rules are partly determined by who is a sitting senator. While this circularity is resolvable in practice (senators serving before the election are clearly identifiable), it is technically circular as drafted.","confidence":0.65,"description":"A 'sitting senator' is defined as 'a senator elected at an election previous to the election referred to in section five of this Act.' Section 5, however, is itself about the conduct of the very same election at which sitting senators may participate. The definition thus depends on identifying 'the election referred to in section five' before that election has occurred, and a senator's status as 'sitting' or not determines how the section 5 election is conducted — creating a mild circularity."},{"type":"retroactive_impossibility","section":"Section 8(1)","severity":"medium","reasoning":"Retroactively nullifying a lawful determination creates uncertainty about acts done in reliance on it. While Parliament clearly has power to do this, it raises the practical impossibility that any person or body who acted on the invalidated determination cannot un-act — their compliance with the old determination is simultaneously valid (when done) and legally erased (after commencement).","confidence":0.7,"description":"Section 8(1) retrospectively invalidates the 'last determination made by the Chief Electoral Officer, prior to the commencement of this Act.' This voids an administrative act that was lawfully made under then-current law (the Representation Act 1905–1938), retroactively rendering it without effect from commencement. Any elections called or administrative steps taken in reliance on that determination between its making and the commencement of this Act would be left in legal limbo."}],"contradictions":[{"severity":"high","section_a":"Section 5(3)","section_b":"Section 5(4)","confidence":0.9,"description":"Section 5(3) provides that the first two senators elected shall hold a 'term of six years' with places becoming vacant on 1 July 1956. Section 5(4) provides that the last two senators elected shall also hold a 'term of six years' with places becoming vacant on 1 July 1953. Both groups are elected at the same election and hold their places from the same commencement day under s.4. It is logically impossible for two groups elected simultaneously and holding places from the same date to both serve 'a term of six years' if their vacancy dates differ by three years. At most one group can actually serve six years; the other must serve either less or more."},{"severity":"high","section_a":"Section 5(1)","section_b":"Section 6","confidence":0.8,"description":"Section 5(1) mandates that seven senators shall be chosen for each State at the first election after commencement. Section 6 overrides this to require ten senators per State in the event of a double dissolution — but simultaneously deactivates all the subsequent sub-sections of s.5 that govern term allocation. This creates a direct conflict: s.5 establishes a comprehensive scheme for seven senators, and s.6 partially replaces it for ten senators while leaving no functional rotation scheme in place, producing an internally inconsistent regime for the double dissolution scenario."},{"severity":"medium","section_a":"Section 4","section_b":"Section 8(2)","confidence":0.8,"description":"Section 4 increases the number of senators per State to ten only from the day of the first meeting of Parliament after the first dissolution of the House following commencement — a future contingent event. Section 8(2) requires the Chief Electoral Officer to act 'forthwith after commencement' using a deemed senate count of sixty (i.e., ten per State). The Chief Electoral Officer is therefore directed to immediately calculate House membership based on a Senate size that has not yet legally come into existence and will not until an indeterminate future date, creating a tension between the operative senate figure (36) and the deemed figure (60)."},{"severity":"medium","section_a":"Section 5(6)(a)","section_b":"Section 5(3)","confidence":0.65,"description":"Section 5(3) assigns the first two senators elected a vacancy date of 1 July 1956. Section 5(6)(a) overrides this for the sixth or seventh senator elected if that person is a sitting senator, moving their vacancy date forward to 1 July 1953. However, s.5(3) refers to 'the first two senators elected' while s.5(6) refers to 'the sixth or seventh senator elected.' A sitting senator elected sixth or seventh could simultaneously fall within s.5(3)'s class (if, for example, they were among the first two in terms of the rotation class assigned) or s.5(6)'s override — creating ambiguity about which provision governs and potentially conflicting vacancy dates for the same senator."}]},"summary":{"complexity_score":6,"scope_assessment":{"changed":false,"description":"The Act does exactly what its title and preamble promise: it increases the number of senators per state and makes the necessary consequential adjustments to House of Representatives numbers and Senate rotation. The transitional provisions in sections 5–7 are entirely ancillary to that core purpose and do not expand the legislation beyond its original intent. The scope is narrow, focused, and internally consistent."},"complexity_factors":["Complex transitional election mechanics across sections 5 and 6, with multiple nested conditional sub-sections governing which senators serve which term lengths","Date-specific logic (1 July 1950, 1953, 1956) that interacts conditionally with whether elected senators are 'sitting senators' or filling casual vacancies","Cross-references to at least three other Acts: Senate Elections Act 1903–1948, Representation Act 1905–1938, and Parliamentary Allowances Act 1920–1947","The double dissolution exception in section 6 overrides and partially nullifies section 5, creating an alternative operative regime","Distinction between 'periodical vacancies', 'casual vacancies', and 'long casual vacancies' requiring reference to external legislation for full meaning","Constitutional preamble referencing sections 7, 14, and 24 of the Constitution, which are necessary context for interpreting the operative provisions","Sub-section 5(6) contains a cross-conditional swap mechanism — if condition A applies, result B shifts to C, and result C shifts to B — which is logically intricate for a short Act"],"plain_english_summary":"The Representation Act 1948 raises each state’s Senate representation from 6 to 10 senators (a Senate of 60), and as a result triggers an immediate recalculation of House of Representatives numbers under the constitutional nexus—pushing the House toward roughly 120 members. It affects every Australian voter, state delegations, and electoral administrators who must adjust seat allocations and boundaries to reflect the expanded Parliament."}},"importantCases":[],"_links":{"self":"/api/acts/representation-act-1948","history":"/api/acts/representation-act-1948/history","analysis":"/api/acts/representation-act-1948/analysis","conflicts":"/api/acts/representation-act-1948/conflicts","importantCases":"/api/acts/representation-act-1948/important-cases","documents":"/api/acts/representation-act-1948/documents"}}