Senate President Ahmad Lawan on Wednesday swore in Senator Smart Adeyemi to represent Kogi West.
Adeyemi, of the ruling All Progressives Congress (APC), won the recent by-election conducted in the district by the Independent National Electoral Commission (INEC).
He defeated Senator Dino Melaye, of the Peoples Democratic Party (PDP), who earlier occupied the seat.
With the swearing-in of Adeyemi, the APC now has 63 senators while the PDP and Young Democratic Party (PDP) have 46 and one member, respectively.
Adeyemi is a ranking senator, having served in the Sixth and Seventh National Assembly. He was the Chairman Senate Committee on the FCT in the Seventh Senate.
The Kogi West senator was also a former President of the Nigeria Union of Journalists (NUJ).