He also served as a member of the Legislative Assembly of Alberta from 1986 to 1993 sitting with the New Democratic Party caucus in opposition.
[2] Gibeault ran as a candidate for the New Democrats in the Edmonton-Mill Woods electoral district for the 1982 Alberta general election.
[5] Giberault ran for a third term in the 1993 Alberta general election in the new electoral district of Edmonton-Ellerslie.
He was re-elected in the 1998 Edmonton municipal election defeating David Fletcher in a two-way race, winning 54% of the vote.
Gibeault won a fourth term in the 2004 Edmonton municipal election defeating Judith Axelson.