Why is Ghana's opposition demanding a voters roll audit ?

Ahead of knife-edge December elections there are demands for an independent forensic audit of the voter register. The electoral commission says it is not needed. Why is the opposition party NDC adamant?Communities in Guinea welcome the return of land taken from them violently by previous governmentsAfrica's future is urban- we explore what's behind the growth of megacities on the continent?Presenter: Audrey Brown Producers: Sunita Nahar, Bella Hassan, Yvette Twagiramariya, Kaine Pieri and Nyasha Michelle in London. Technical Producer: Nick Randell Senior Producer: Paul Bakibinga Editors: Andre Lombard and Alice Muthengi