Ghana’s former President John Dramani Mahama has staged a political comeback by winning the West African nation’s presidential election after his rival Vice President Mahamudu Bawumia conceded defeat on Sunday.

Addressing a press conference from his residence, Bawumia said he had called Mahama to congratulate him, adding that Mahama's National Democratic Congress (NDC) also won the parliamentary election.

“Let me say that the data from our own internal collation of the election results indicate that former President John Dramani Mahama has won the Presidential election decisively,” Bawumia said. “The NDC has also won the parliamentary election. Even though we await final collation of a number of seats, I believe ultimately these will not change the outcome.”

Bawumia said he conceded before the official results to ease tensions.

Before his concession, scuffles had been reported in several local constituency centres where results were still arriving from polling stations.

“I am making this concession speech before the official announcement by the Electoral Commission to avoid further tension and preserve the peace of our country,” Bawumia said.

“It is important that the world investor community continues to believe in the peaceful and democratic character of Ghana,” he added. “The people have voted for change at this time, and we respect that decision with all humility.”