In 1831, he married Elise, the daughter of Benjamin Beaupré, a merchant at L'Assomption. Rodier moved to L'Assomption; he was elected to the Legislative Assembly of Lower Canada for that region in an 1832 by-election held after Barthélemy Joliette was appointed to the legislative council. Rodier was reelected in 1834.
Rodier married Elise, daughter of Benjamin Beaupré, a merchant at L'Assomption, in 1831. He then moved to L'Assomption and was elected to the Legislative Assembly of Lower Canada in 1832 after Joliette's appointment to the legislative council. Rodier won re-election in 1834.