Chimaroke Nnamani, senator representing Enugu east, has lost his bid to seek re-election to the upper legislative chamber.
Announcing the result on Sunday, Joachim Omeje, INEC returning officer, said Kelvin Chukwu, the candidate of the Labour Party (LP), secured 69,136 votes to win the election.
Nnamani, who contested on the platform of the Peoples Democratic Party (PDP), came second with 48,701 votes while Adaku Ogbu of the All Progressives Congress (APC) came a distant third with 8,548 votes.
Kelvin is the brother to Oyibo Chukwu, who was the LP candidate for the senatorial district until his death days before the election was initially scheduled to hold in February.
Oyibo was killed on February 22, alongside some of his supporters, in Amechi Awkunanaw in Enugu south LGA of Enugu when gunmen opened fire on his convoy.
Meanwhile, the PDP had expelled Nnamani on February 10 over alleged anti-party activities.
The senator, who had sued the PDP over the expulsion, had publicly supported Bola Tinubu, the president-elect who is a member of the All Progressives Congress (APC.