After independence in 1966, the House of Assembly was renamed the National Assembly. The electoral system remained unchanged, but the elections were rigged by the PNC, which had transferred responsibility for holding elections from the Electoral Commission to a government department. Unfair elections were held in 1968 and 1973. A new constitution promulgated in 1980 led to the creation of an executive president; the leader of the party that received the most votes in an election would automatically assume the post. Two further fraudulent elections were held in 1980 and 1985, with the PNC winning an increasing number of seats on each occasion.