The United Democratic Movement (UDM) is a centre-left, social-democratic, South African political party, formed by a prominent former National Party leader, Roelf Meyer (who has since resigned from the UDM) former African National Congress and homeland leader, Bantu Holomisa and John Taylor former ANC REC member in 1997. It has an anti-separatist, pro-diversity platform; and supports an individualist South Africa with a strong moral sense, in both social and economic senses.
Source: http://en.wikipedia.org