5 June 1975
The Cape Supreme Court, sitting in Port Elizabeth, sets aside the 1973 election of Lennox Sebe and three other members of the Ciskei Legislative Assembly on the grounds of irregularities at the capital, Zwelitsha. Lennox Sebe is announced ineligible for the office of Chief Minister. However, Sebe manages to launch a successful come back when he becomes Chief Minister of the Ciskei, after he won a by-election on 24 October 1975.
References

SAHO Lennox Sebe [online] Available at: www.sahistory.org.za [Accessed on 3 June 2013]|

African Elections "Elections in South Africa's Apartheid-Era Homelands Bantustans" [online] Available on:https://africanelections.tripod.com [Accessed on 3 June 2013]