 A number of transitional arrangements were necessary to put these changes into effect.Those who had terms expiring on 21 May 1964, and five of the ten whose terms were to expire on 21 May 1966 (those who had the lowest winning margins at the 1960 election) would retire on 21 May 1965.The remaining 15 members were eligible to be appointed to new provinces for terms expiring on 21 May 1968.