Yanukovych Quits as Ukraine PM
On Thursday, the Supreme Court rejected Mr Yanukovych's complaints against the conduct of the election.
The poll was re-run on Sunday after Mr Yuschenko and independent observers alleged extensive vote-rigging.
Mr Yushchenko's followers clogged the streets of the capital Kiev to demand a new vote be held.
International observers praised the conduct of the re-run, saying it was much fairer than the earlier rounds.
Preliminary final results from the Central Election Commission suggest Mr Yushchenko won the vote with an 8% lead over the prime minister.
However, Mr Yushchenko cannot be proclaimed the winner until his rival exhausts all legal possibilities to challenge the election results.
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