Members in the legislative council were increased (members). Elective principle was restricted to Lagos and Calabar. The introduction of elective principle. Constitution of Nigeria (Clifford Constitution).pdf. Northern Province was not represented Sir H ugh Clif f o r d Cons t it ut ion () Back gr ound: T he Clif f o rd Cons t it ut ion ado pt e d inde rived it s nam e f r o m t he t he n gover no r o f Nige ria These constitutions include the Clifford Constitution of, the Richards Constitution