Elected to Federal Parliament as a Senator for South Australia in May 2022, Senator Liddle is also  Shadow Minister for Social Services, and Shadow Minister for Indigenous Australians.
She currently sits on the Joint Standing Committee for Aboriginal and Torres Strait Islander Affairs. Before her election, Senator Liddle worked in the private and not-for-profit sector in multiple roles as a senior business leader in the tourism, energy, media, tertiary education and arts industries. Indigenous Business Australia, the Adelaide University Council, Aboriginal Hostels Limited, the Council of the University of South Australia and the SA Housing Trust were among the many boards on which she served. Senator Liddle holds a Bachelor of Arts in management from the University of South Australia and a Master of Business Administration from the University of Adelaide. She has completed a Vincent Fairfax Foundation Ethics
Fellowship and is a graduate of the Australian Institute of Company Directors.