newly formed mk party exceeded expectations to finish third. but the party says it is considering challenging the results in court. and so begins a new era in south african politics, as well as new challenges for president cyril ramaphosa, who himself helped negotiate the end of apartheid. the bbc s africa correspondent, barbara plett usher, reports. it had been a slow and steady day, and then.this. the former president, now the head of the upstart mk party, an unexpected challenge to the anc. already reeling from voter anger over economic mismanagement and corruption scandals. jacob zuma has created quite a stir here. he s made a rock star entrance. his party came third, with an unexpectedly strong showing, taking a lot of votes away from the anc. ..and still trying to take more. he announced he had evidence of election rigging, said he was considering a demand for a full revote. the results aren t official yet, but they re clear. the anc has lost the outright majority it he