In the
1999 general election, Greyling was elected to an NNP seat in the National Assembly, representing the
Western Cape constituency. He was re-elected to his seat in the
2004 general election and served as the NNP's chief whip in the assembly. Months after the election, in October 2004, he and seven other NNP members announced that they intended to defect from the party to the ANC during the next floor-crossing period. Greyling said that he had made his decision in consultation with local party members and after studying the
Freedom Charter and the national
Constitution. He officially remained an NNP member until 1 September 2005, when, at the outset of the
2005 floor-crossing window, he formally joined the ANC. == References ==