|Member of the Australian Capital Territory Legislative Assembly|
|Assumed office |
15 October 2016
|Born||1991 (age 29–30)|
|Political party||Australian Labor Party (ACT Branch)|
|Alma mater||Australian National University|
Michael Hugh Petterson (born 1991) is an Australian politician. He has been a Member of the Legislative Assembly of the Australian Capital Territory since 2016 when he was elected as the Labor Party representative for the electorate of Yerrabi.
Pettersson was raised in Canberra and studied at the Australian National University. During this time he became involved in student politics, serving as the ACT Branch President of the National Union of Students and President of the ANU Sport & Recreation Association. He also served as President of ACT Young Labor. After graduating, he worked as a trade unionist for the Construction, Forestry, Mining and Energy Union.
Pettersson contested the seat of Yerrabi in the 2016 ACT election and received 4,817 primary votes or 0.6 of a quota. In the campaign, he drew attention for his creative use of social media to campaign. He was elected in third position in the five member Yerrabi electorate behind Meegan Fitzharris and Alistair Coe.
In Pettersson's inaugural speech he highlighted growing intergenerational inequality, the importance of education, and the dangers of casualisation in the workforce. 
As a member of the Legislative Assembly, Pettersson prepared and introduced historic legislation to legalise the possession and personal use of small amounts of cannabis in 2018. This bill was passed by the ACT Legislative Assembly on the 25th of September 2019, making the ACT the first jurisdiction to legalise cannabis in Australia. 
Pettersson was appointed the chair of the Education, Employment and Youth Affairs Committee following the 2016 election. 
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