A member of the Nova Scotia Liberal Party, he represented the electoral district of Hammonds Plains-Lucasville.
[5] Jessome is also a member of the economic Development and Human Resources Committee, with a focus on Youth Employment strategies.
On February 23, 2021, Jessome was appointed to the Executive Council of Nova Scotia as Minister of the Public Service Commission.
[9] Jessome was re-elected in the 2021 election, however the Rankin Liberals lost government becoming the Official Opposition.
[10][11] As of September 22, 2024, Jessome serves as the Official Opposition critic for the Emergency Management Office, Internal Services, and Communications Nova Scotia.