Career
He has been a Liberal. Jobin was the mayor of Street-Étienne-de-Lauzon from 1993 to 2001. He ran in the 1998 provincial election in Chutes-de-la-Chaudière, but was defeated.
He also ran for mayor in Lévis in 2001 but he was defeated by Jean Garon.
In 2004 though, the number of Liberal MPs from Quebec significantly decreased and Jobin lost the merged seat of Lévis—Bellechasse to Bloc Québécois candidate Réal Lapierre.