Senator for Western Australia (1 July 2014 - ), Assistant Minister for Home Affairs (28 August 2018 - 2 March 2019), Minister for Defence Industry (2 March 2019 - 26 May 2019), Minister for Defence (29 May 2019 - 29 March 2021), Minister for Government Services and Minister for the National Disability Insurance Scheme (30 March 2021 - 23 May 2022).