Nigeria: Ruling party candidate Yar'Adua wins poll
Umaru Yar'Adua of the People's Democratic Party (PDP) has been declared winner of a presidential poll rejected by the opposition and condemned by observers as a "charade".
Yar'Adua won with 24.6 million votes, far ahead of his closest rival, former army strongman Muhammadu Buhari, with 6.6 million.
The United States said the vote was "flawed" but stopped short of calling for it to be overturned.