[2] Justin Hanson grew up and went to school in the western suburbs of Adelaide, later studying at Christian Brothers College.

[citation needed] Hanson was elected as a councillor in the City of Tea Tree Gully in Balmoral Ward.

[citation needed] He was a Director on the Board of Statewide Superannuation and served as the Legal Officer of the Australian Workers Union.

Gerry Kandelaars resigned from parliament on 17 February 2017, which created a casual vacancy and subsequent appointment.

A new electoral system applied for the 2018 Legislative Council election, abolishing group voting tickets and allowing voters to express their own preferences for parties above the line.