Ghana's President John Dramani Mahama has chosen Central Bank Governor Kwesi Amissah-Arthur as his deputy, a spokesman for Mahama told a local radio station on Tuesday according to dpa. Mahama took over as Ghana's president last week when President John Atta Mills died. The ruling National Democratic Congress (NDC) party has since said that it will name Mahama as its candidate in an election due at the end of the year. -- SPA