He co-founded and, until June 2019,[1] was the Chairman of Reform Jersey, one of the island's political parties.

[2][3] He stood in the Senatorial by-election held on 7 September 2016 but came second to Sarah Ferguson.

[4] After two and half years in government, on the 8th of November 2020 Mézec resigned from his Ministerial role to support a vote of no confidence against the Chief Minister, Senator John Le Fondré.

[5] For the 2022 general election, the position of Senator was abolished and all candidates stood as Deputies or Constables,[6] meaning Mézec would be running again for his previous role as a Deputy.

Following the party's election success, Deputy Mézec challenged Kristina Moore for the role of Chief Minister,[7] but he was defeated by 39 votes to 10.