 He served as President of the Campbellton Regional Chamber of Commerce, President of the Campbellton Business Improvement Corporation, and was the founding President of the Bay of Chaleur Alzheimer Society.Dubé was elected in the Madawaska—Restigouche electoral district in the 1997 general election.He served in the 36th Canadian Parliament until he was defeated by Liberal candidate Jeannot Castonguay in the 2000 election.