In 1981 the Senate was abolished and replaced with the President's Council, which was an advisory body consisting of sixty nominated members from the white, coloured, Indian and Chinese population groups.The right wing of the ruling National Party (NP) rejected this proposal and a group of its MPs, led by Dr. Andries Treurnicht, a cabinet minister and the leader of the NP in the Transvaal province, broke away to form the Conservative Party (CP) in order to fight for a return to apartheid in its original form.However, Botha continued to be in favour of implementing the President's Council proposal and in 1983 the NP government introduced a new constitutional framework.The New Republic Party led by Vause Raw supported the new constitution, although it continued to call for black representation in Parliament.[2] The United Democratic Front (UDF) was launched as a non-racial coalition to oppose the referendum and the subsequent elections for the coloured and Indian chambers in parliament.