Atiku Abubakar, candidate of the Peoples Democratic Party (PDP), won in 18 out of the 33 local government areas of Oyo state in the just collated presidential election results released in Ibadan.
Atiku polled 366,592 votes, while Buhari won in the remaining 15 local government areas with 365,229 votes.
The results were released on Monday by AbdulKareem Suleiman-Age, INEC chief collation officer for Oyo presidential election.
Suleiman-Age is the vice-chancellor of the University of Ilorin.
The results showed that Atiku won in Ibarapa east, Ibarapa north, Ogbomosho north, Ogbomosho south, Afijio, Saki east, Kajola, Iwajowa, Ibadan north west and Olorunsogo.
Others are: Ona Ara, Surulere, Ibadan North, Ogo-Oluwa, Akinyele, Orire, Lagelu and Ibadan North east.
Buhari emerged winner in Egbeda, Irepodun, Oluyole, Itesiwaju, Saki west, Atisbo, Iseyin, Orelope, Ibarapa central, Ido, Oyo east, Atiba, Oyo est, Ibadan south west and Ibadan South east.
In Iwajowa local government, PDP polled 7,477 votes, as against APC that scored 6,528. In Irepodun local government, APC scored 11,688 votes and PDP garnered 4,244 votes.
Collation results from Ibarapa showed that APC won with 9,070 votes, while PDP scored 6,587 votes.