Party leaders who did not hold a seat and who did not automatically become Leader of the Opposition include, among others: Robert Stanfield in 1967, Brian Mulroney in 1983 and Jean Chrétien in 1990, all of whom sought and won a seat in a by-election before assuming that office (see also Appendix 9, “Leaders of the Official Opposition in the House of Commons Since 1873”).
Il y a quelques chefs de parti qui, ne siégeant pas à la Chambre, ne sont pas devenus leaders de l’Opposition officielle, notamment : Robert Stanfield en 1967, Brian Mulroney en 1983 et Jean Chrétien en 1990.