Bangui, 19 Rabi'I,1437 AH, 30 December,2015 , SPA -- Polling stations opened on Wednesday in a presidential election in Central African Republic, Reuters quoted witnesses. Thirty candidates are competing for the presidency. In the absence of opinion polls or an incumbent, a likely winner is difficult to predict, but leading candidates include former prime ministers Anicet-Georges Dologuele and Martin Ziguele. -- SPA 11:46 LOCAL TIME 08:46 GMT www.spa.gov.sa/w