The court refused to review complaints alleging that the Central Election Committee failed to enforce voting law and failed to ensure that all disabled voters received home-voting rights, among other things.
Yanukovych, however, may launch further legal challenges once the poll's result is officially published.
Electoral authorities are also reviewing complaints from Yanukovych seeking to nullify the 26 December repeat runoff, although the eight-point margin of defeat suggests that is unlikely.
Yanukovych Side Confident
Allies of opposition leader Yushchenko said today they are confident that their side will win any legal challenges.
Meanwhile, Yushchenko suggested that he would support Yuliya Tymoshchenko to be Ukraine's prime minister once he is president.
Tymoshchenko yesterday foreshadowed a new political order in Ukraine: "When we come to power, opposition members will not be jailed or exiled as they were under [outgoing President Leonid] Kuchma," Tymoshenko said. "And their heads will not be cut off, as happened to [slain journalist Heorhiy] Gongadze, and journalists will not be beaten in their own homes, because we are coming to power with a completely different heart and a different mind. And I think you will be able to see and understand that."
Yushchenko has pledged that his new government will work to deepen Ukraine's cooperation with both the European Union and Russia.
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"Ukrainian Cabinet Meeting Thwarted As Vote Result Is Challenged"
"Ukraine: Yushchenko Wins, But Country Does Not Have A New President Yet"
"Ukrainian Authorities Declare Yushchenko Winner"
"Will Ukraine Now Orient Itself Toward The West?"
[For more RFE/RL coverage and analysis, see our dedicated "Ukraine's Disputed Election" website.]