Mr Conde and his rival both declared victory earlier on Monday Opposition leader Alpha Conde has won the presidential run-off in Guinea, the electoral commission has said.
Mr Conde gained 52.5% of votes in the 7 November poll against former Prime Minister Cellou Dalein Diallo, according to provisional results.
The elections aim to mark the end of 52 years of authoritarian rule, but have been marred by violence and delays.
Mr Diallo, who has alleged fraud, earlier said he would not accept the outcome of the polls.
Both Mr Conde and Mr Diallo earlier declared victory ahead of the results.
Tensions in the capital, Conakry, have sparked protests and riots by supporters of Mr Diallo.
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