Sean L'Estrange

In 2017, L'Estrange was re-elected to the seat of Churchlands in the 40th Parliament of Western Australia. The Liberal Party suffered a primary vote swing of 16 percent but L’Estrange kept his swing to 4 percent, securing a comfortable TPP majority of 63.2 percent, the second-safest Liberal seat in Perth. Following the Liberal Government's defeat, he was appointed Manager of Opposition Business in the Legislative Assembly and Shadow Minister for Mines and Petroleum; Economic Development; Defence Issues; Innovation and ICT; Science. He was also elected as the Deputy Chairman of the Parliament's Economic and Industry Standing Committee. In January 2018 he was made Shadow Minister for Health and Mental Health. In June 2019 he was appointed Shadow Minister for Corrective Services and Housing. In February 2020 he took on the role as Shadow Minister for Corrective Services; Emergency Services; Defence Issues; and Racing and Gaming.

L'Estrange served as a member of the Joint Parliamentary Standing Committee on the Corruption and Crime Commission, Chairman of the Public Accounts Committee, Deputy Chairman of the Joint Standing Committee on Audit, and as member of the Parliamentary Liberal Party's Finance, Commerce & Development Committee. In March 2016, he was elevated to Cabinet and appointed Minister for Mines and Petroleum and Minister for Small Business. In September 2016 he was also appointed as Minister for Finance and to the Government's Economic and Expenditure Reform Committee.

In 2013 L'Estrange was elected to the seat of Churchlands in the 39th Parliament of Western Australia. The seat had been held by conservative independent Liz Constable since 1991, dating to its time as Floreat. However, it was located in the Liberals' heartland of the southwest beachside suburbs of Perth, and it was a foregone conclusion that it would revert to the Liberals once Constable retired. As expected, L'Estrange won comfortably, with 59 percent of the primary vote and 70.2 percent of the two-party vote.

L'Estrange joined the Liberal Party of Western Australia in 2002 (Hackett Branch/Churchlands electorate). He held pre-parliamentary service positions as President of Hackett Branch 2008–12; President of Curtin Division 2008–09; Member of State Executive 2008–09 and member of State Council 2008–2012. He has continued to serve as a Liberal Parliamentary Party State Council Delegate since 2013.

L'Estrange completed his schooling at Aquinas College, Perth. While he was at Aquinas, he was College Prefect, House Captain, College Swimming Captain, College Cross Country Captain, Army Cadet Under Officer, President of the Young Christian Students, a member of the College Debating Team and he performed in College drama productions. L'Estrange represented Western Australia at the National All Schools Cross Country Championships in Adelaide in 1982, Brisbane in 1984, and Perth in 1985 and was made the State Team Vice Captain in 1985. He was also a silver medalist in the WA Debating League State final. At his school graduation he was awarded the College Prize for Leadership and Service.

Sean Kimberley L'Estrange (born 19 September 1967) is an Australian politician. He is the Member for the Western Australian Legislative Assembly seat of Churchlands. He was the Minister for Finance; Minister for Mines and Petroleum; and Minister for Small Business in the Barnett-Liberal Government of Western Australia. In Opposition he has held the role of Manager of Opposition Business and senior Shadow Ministerial portfolios. His career background includes being a Senior Infantry Army Officer (Colonel) and Afghanistan veteran; Business leadership and management consultant; and Senior School Economics teacher and Head of Department.