He left provincial politics to campaign in the 1988 federal election in the Hull—Aylmer electoral district for the national Liberal party.
He served in the 34th Canadian Parliament until he left the party on 2 July 1990 following the implosion of the Meech Lake Accord.
After several months as an independent, he became a charter member of the Bloc Québécois party on 20 December 1990.
However, Rocheleau's embrace of Quebec sovereigntism did not play well in his strongly federalist riding, and he was roundly defeated by Liberal candidate Marcel Massé in the 1993 federal election, losing almost half of his vote from 1988.
This article about a Quebec Member of Parliament from the Liberal Party of Canada is a stub.