johannesburg new anc leader cyril ramaphosa say tuesday top six south africa rule party comprise politicians different side ideological divide expect party emerge week leadership conference strong analysts warn party top decision-making group could fail agree policy three politicians apiece draw ramaphosa camp rival nkosazana dlamini-zuma leadership choose unity leadership ramaphosa tell reporters conference leadership combine different view approach prevalent conference prior election south africa 's ramaphosa say party 's `` top six `` combine different view