Senator representing Osun Central Senatorial District on the platform of the All Progressives Congress, Ajibola Basiru, has lost the election.
Basiru is the spokesperson of the Senate.
NAN reports that Returning Officer of Independent National Electoral Commission, Ibrahim Usman, announced the results on Sunday.
Usman said Fadeyi Olubiyi, candidate of the Peoples Democratic Party won the election held on Saturday.
Olubiyi polled 134,229 votes to defeat Basiru, who scored 117,609 votes.
In another development, Adewale Muruf of the PDP won the Osogbo Federal Constituency election.
INEC returning officer, Isiaq Egbewole, said Muruf polled 71,677 votes to defeat Abosede Ogo-Oluwa of the APC, who scored 58,992 votes.