One of the key architects of Australia's Constitution, he became the new nation's first Prime Minister at a grand ceremony in Centennial Park, Sydney, on 1 January 1901.

Australia’s second Prime Minister, was also the fifth and the seventh. He was in office three times in the first ten years of Federation.

Australia’s first Labor Prime Minister held office for only four months in 1904, but his imprint on legislation extended through the first decade of the Australian parliament.

Prime Minister from 1904 to 1905, was Leader of the Opposition for six of the first seven years of the Australian parliament.

Prime Minister three times, in 1908–09, 1910–13 and 1914–15.He was the founding member of both the Labor Party in Queensland and of the federal parliamentary Labor Party. He held the House of Representatives seat of Wide Bay from 1901 until 1915.

He took office in 1913 with a Liberal Party with only one seat in the House of Representatives. On leaving politics, he served as Australia’s third High Commissioner in London from 1921 to 1927.

He Australia’s longest serving Prime Minister until 1957 when Robert Menzies overtook his record. His other record still stands: no parliamentarian has surpassed his 51 years and 7 months of continuous service as a member of Australia’s House of Representatives.

He was a decorated war hero before he became the second youngest Prime Minister in 1923. He was perfectly suited to the elegance and confidence of his period – the ‘Roaring Twenties’.

Australia's ninth Prime Minister was given a triumphal welcome when they arrived in Canberra on 21 October 1929 for the swearing in of the new Labor government. But two years later, he said his term as Prime Minister was like a nightmare.

He was Prime Minister for seven years – only a few days short of matching the then record term of WM Hughes. He was the first Australian Prime Minister to die in office.

He was only Prime Minister for 20 days, from 7 April 1939 to 26 April 1939, until Robert Menzies was elected as the new leader. However, he was deputy Prime Minister to SM Bruce in 1923–29, and to Joseph Lyons in 1934–39.

He was Australia’s longest serving Prime Minister. He held the office twice, from 1939 to 1941 and from 1949 to 1966. Altogether he was Prime Minister for over 18 years – still the record term for an Australian Prime Minister.

He was Prime Minister from 29 August to 7 October 1941. As well as his ‘40 days and 40 nights’ in office, he was acting Prime Minister for periods totaling nearly two years during his coalition governments with Prime Minister Robert Menzies.

He was regarded as one of the greatest Australian PM's. His achievement rests on his leadership of the nation during much of World War II. His rejection of the British strategy for Australian troops enabled the successful defense of New Guinea.

He was Prime Minister for only eight days, 6–13 July 1945, after the death of John Curtin. He was Forde was a federal parliamentarian for 24 years, spending 14 years as a deputy leader of the federal parliamentary Labor Party and for nine years as a deputy Leader of the Opposition.

A railway engine driver in his home town of Bathurst, New South Wales, he became one of the most highly regarded of Australia’s Prime Ministers.

He was in office from 26 January 1966 to 19 December 1967 when he was officially pronounced dead after drowning at sea.

He was Prime Minister from 19 December 1967 to 10 January 1968 following the death of Harold Holt. His term as Prime Minister came near the end of his 37 years in parliament.

On 10 January 1968, he became the 19th Prime Minister in unusual circumstances. He was elected Liberal Party leader to replace Harold Holt, who had disappeared the previous month while swimming off the Victorian coast, and was presumed dead.

He was Prime Minister from 1971 to 1972. He was first elected to parliament in 1949, and held the seat of Lowe, in Sydney, for 33 years until his retirement in 1982.

He became Australia’s Prime Minister on 5 December 1972. His Labor government, the first after more than two decades, set out to change Australia through a wide-ranging reform program.

He began his term as caretaker Prime Minister on 11 November 1975, after Governor-General Sir John Kerr dismissed Gough Whitlam’s Labor government.

With eight years in office, he was Australia’s longest-serving Labor Prime Minister. He became Prime Minister after only two years in parliament, and only one month as Leader of the Opposition.

He held office from 20 December 1991 to 11 March 1996. He played a significant role in the reconciliation process between Indigenous and non-Indigenous Australians.

He served from 11 March 1996 until 3 December 2007, the second-longest prime ministerial term after Robert Menzies.

He held office from the 3rd of December, 2007 to 24th June,2010, and for 11 weeks in 2013. Following Labor's defeat in the September 2013 federal election, he resigned from Parliament on 22 November, 2013.

On 24 June 2010 , she became the first woman to hold the office. She was elected unopposed by the Parliamentary Labor Party.

He defeated Mr Turnbull in a leadership spill by 42 votes to 41, to become Opposition Leader. On 18 September 2013 he became Australia's Prime Minister.

On 14 September 2015, he challenged Abbott for the Liberal leadership, and won the subsequent ballot with 54 votes to Abbott's 44. He still remains in office as Australia's Prime Minister.