Ngozi Okolie has been declared winner of the Aniocha/Oshimili federal constituency of Delta state.
Mr Okolie was declared winner on Thursday by the Abuja division of the Court of Appeal.
The appellate set aside the judgement of the state NASS tribunal which declared Ndudi Elumelu winner.
Read also: Inibehe Effiong Unravels Election Petition Challenges
Mr Okolie of the Labour Party had polled 53,879, while Elumelu of the Peoples Democratic Party polled, 33,456.
However, the Asaba state National Assembly election tribunal declared Elumelu the winner of the poll.
In its judgement, the appellate court in its judgement set aside the decision of the state tribunal and affirmed Mr Okolie winner.