[3] A member of the Liberal Party of Newfoundland and Labrador, he represents the electoral district of Burgeo-La Poile.

He served on the executive of Port aux Basques Minor Hockey Association for 7 years, including 5 as president), ending in June 2011; served as a committee member for Port aux Basques Come Home Year 2005; served as a member of the Southwest Coast Marine and Mountain Zone Committee, and is currently a board member on the Dr. Charles L. Legrow Health Care Foundation.

[10] On October 11, 2011, Parsons was elected as the Member of the House of Assembly in the district of Burgeo-La Poile.

[13] On May 2, 2012, Parsons proposed a private members' resolution for a fixed House of Assembly schedule.

[15] He was appointed as Minister of Justice, Attorney General and Government House Leader in Newfoundland and Labrador.

[16] Early on in that role, he has worked toward establishing a Drug Treatment Court, expansion of the Family Violence Intervention Court,[17] establishing a Serious Incident Response team as civilian oversight for police,[18][19] and a pilot program for free legal advice for sexual assault complainants.

On August 19, 2020, he was appointed Minister of Industry, Energy and Technology, and Attorney General in the Furey government.