He's also a radio talk show host, and stood for leadership of the Action démocratique du Québec (ADQ), after Mario Dumont's resignation in 2008.
Plante is a co-host, with Max Bradette, on Les Cowboys de la Radio, the main show at 1040 AM Montreal.
Plante was elected to Montreal's City Council for the district of Père-Marquette in 1998 with 34% of the vote, defeating incumbent Robert Laramée (33%).
Plante was affiliated to the Vision Montréal party of Mayor Pierre Bourque.
Plante ran as an Action démocratique du Québec (ADQ) candidate for the Basses-Laurentides district of Deux-Montagnes in 2007.