He was elected to the Legislative Assembly of Lower Canada in an 1835 by-election for Montreal County. Jobin was arrested in May 1838 and charged with sedition, but never tried; he was released in July.
In 1835, Jobin won a seat in the Legislative Assembly of Lower Canada representing Montreal County. He was later arrested in 1838 on charges of sedition, but these charges were dropped before trial. He was then released in July.