The constituency Returning Officer, Prof. James Epoke of University of Calabar, announced the result on Sunday in Ogidi, Idemili North Local Government Area of the state.
Epoke said that Mmegbuanaeze scored 11,526, while Tony Muonagor of APC had 5,677, Nnebunwa Ude of UPP scored 2,940 and Charles Udezue of PDP polled 2,758.
Nkoli replaced her husband, Mr Francis Mmegbuanaeze, who died on Aug. 16.