[4][5] At the 2012 election, Shane Rattenbury was the only Greens MLA to retain his seat in the Legislative Assembly, and entered into a power sharing arrangement to allow the Labor Party to once again form minority government.
[6] The Labor Caucus agreed to appoint Rattenbury as a minister in Katy Gallagher's five-member cabinet, and to support various Greens policies.
[7] Rattenbury was re-elected at the 2016 election and joined by party colleague Caroline Le Couteur, taking the Greens tally to 2 out of 25 total seats.
As a result, Rattenbury joined the second Barr ministry, although he reserved the right to withdraw from Cabinet discussions on divisive issues and vote independently in the Assembly.
Since November 2020, Rattenbury, Rebecca Vassarotti and Emma Davidson have served as Greens ministers, making up a third of the Barr ministry.