The 1969 Constitution modified the detailed provision for electoral rolls and seats in the Assembly. The most significant 1969 modifications were that cross voting was abolished and the B roll was reserved for non-Europeans. The Assembly constituencies were reformed so that there were 50 A roll, and 8 B roll seats. It was provided that the number of B roll seats would rise over time in line with the proportion of total personal income tax paid by blacks until a total of 50 black seats was reached. In addition to the B roll seats, the African tribal chiefs were able to elect another 8 members. The immediate result of this arrangement was that 270,000 whites had 50 seats and 6 million Africans had 8 seats in the Assembly, with a handful of African chiefs having 8 seats as well.