Zimbabwe's opposition leader insisted on Friday that he won the country's landmark election, rejecting the results as "fraudulent" and vowing to challenge them in court.
Zimbabweans voted on Monday in the first election since the removal of former president Robert Mugabe, a watershed moment they hope will rid the country of its pariah status and spark a recovery in its failed economy.
President Mnangagwa, Mugabe's former ally in the ruling ZANU-PF party, faces opposition leader Nelson Chamisa of the Movement for Democratic Change (MDC) in the landmark vote.
Zimbabwe goes to the polls Monday in its first election since authoritarian leader Robert Mugabe was ousted last year, with allegations mounting of voter fraud and predictions of a disputed result.
The election will be the first since former leader Robert Mugabe was removed in a de facto coup in November.
Zimbabwe's President Emmerson Mnangagwa led tributes to late opposition leader Morgan Tsvangirai on Thursday, describing the long-time rival of ousted president Robert Mugabe as a dedicated defender of democracy.
Robert Mugabe led Zimbabwe from independence in 1980 but stepped down on Tuesday after the army seized power and the ruling party turned against him.
Zimbabwe President Robert Mugabe clung on for a week after an army takeover and expulsion from his own ruling ZANU-PF party.