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Whoever wins Zimbabwe's presidential election will have have to form a government of national unity, the country's UN ambassador has said.
"There is no way anybody can do without the other," Boniface Chidyausiku told the BBC, arguing that neither side could really control parliament.
He is the second government source to make this suggestion in a week.
The final parliamentary results are due to be released shortly, after which presidential results will be verified.
A report on the situation in Zimbabwe is to be presented to the UN Security Council later on Tuesday.
The opposition Movement for Democratic Change (MDC) has called on the UN to send a special envoy and to warn President Robert Mugabe that increasing violence against opposition activists amounts to "crimes against humanity".