Zimbabwe's elections have been branded a "huge farce" by the man looking like finishing in second place.
Prime Minister Morgan Tsvangirai dismissed the poll as "null and void" after President Robert Mugabe's ruling Zanu-PF claimed victory.
Tsvangirai said the elections had been "marred by administrative and legal violations which affect the legitimacy of its outcome."
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Sources from the ruling party claimed to have "buried" the opposition Movement for Democratic Change.
But Tsvangirai said: "It's a sham election that does not reflect the will of the people."
Observers reported up to a million people being prevented from voting, although the elections were also described as 'free and fair'.
The official result of the election has not yet been confirmed, but Reuters quoted a senior Zanu-PF source saying: "We've taken this election. We've buried the MDC. We never had any doubt that we were going to win."