Ghana’s election commission announced Sunday night that the West African nation’s president won re-election, though the main opposition party says it has “credible evidence” the results were manipulated. In a statement streamed live on the Internet, Electoral Commission Chairman Kwadwo Afari-Gyan declared “John Dramani Mahama president-elect” after securing 50.7% of the vote. Nana Akufo-Addo, the candidate for the New Patriotic Party (NPP), garnered 47.7% of the vote, according to the commission. … But reiterating claims made earlier that the vote had been “manipulated,” the New Patriotic Party issued a statement it has “credible evidence (that) undermines the integrity of the...