[5] A resident of Woolloongabba, Chandler-Mather is a member of the Queensland Greens and worked for the party prior to being elected to parliament.

[6] His parents, Tim Mather and Kim Chandler, were members of the Australian Labor Party (ALP).

[3] Chandler-Mather quit the ALP in 2013, stating in 2022 that he could not remain as a member of the party following Julia Gillard's reestablishment of off-shore detention centres in Nauru.

[13] On 27 August 2024, Chandler-Mather took to the stage of a rally in Brisbane, protesting legislation passed the previous week to force the CFMEU into administration.

[14][15] In a 2020 interview with Tom Ballard, Chandler-Mather expressed a desire to turn the Queensland Greens into a mass party that was primarily supported by the working class, though he stated he did not identify as a socialist ideologically, instead claiming that his priorities merely overlapped with what is often perceived as socialism.

[17] In 2023, defending his party's transitional demand that Australian rents should be frozen then capped, he said that passing the Housing Australia Future Fund bill would mollify renters and set back the Greens' campaign.