He was elected to the Castries Central constituency as an Independent Member of Parliament, having won the by-election held on 13 March 2006, triggered by the resignation of Saint Lucia Labour Party's MP Sarah Flood-Beaubrun.
Céligny Ardouin's brothers, Beaubrun and Coriolan, were also well-known, Beaubrun as a politician and historian, Coriolan as a poet.