Mozambique's ruling Frelimo party has chosen regional governor Daniel Chapo as its new leader, making him the successor to President Filipe Nyusi if the party wins this year's elections, Nyusi said late on Sunday."With the election of its candidate for president, Frelimo took an important step to prepare for victory in the October elections," Nyusi said on Sunday night at the end of an extraordinary party congress near the capital Maputo.