Murrumbidgee was created in 2016, when the five-electorate, 25-member Hare-Clark electoral system was first introduced for the Australian Capital Territory (ACT) Legislative Assembly, replacing the previous three-electorate, 17-member system.

[1] The Murrumbidgee electorate consists of the Woden Valley suburbs of Chifley, Curtin, Farrer, Garran, Hughes, Isaacs, Lyons, Mawson, O'Malley, Pearce, Phillip, Torrens, the Weston Creek suburbs of Chapman, Duffy, Fisher, Holder, Rivett, Stirling, Waramanga, Weston, the Molonglo Valley suburbs of Coombs, Denman Prospect, Whitlam and Wright, the South Canberra suburbs of Deakin, Yarralumla, Forrest and Red Hill as well as the districts of Coree (including the village of Uriarra) and Stromlo.

On the original boundaries contested in 2016 Murrumbidgee included the entire suburb of Kambah.

However the boundary redistribution conducted in 2019 transferred the western portion of Kambah to the Brindabella electorate in exchange for gaining the suburbs of Deakin and Yarralumla from the Kurrajong electorate.

Ed Cocks (Liberal) was elected as her replacement on countback on 20 June 2022[4]