Adeleke defeated Gboyega Oyetola the incumbent governor and candidate of the All Progressives Congress (APC) at the polls held on Saturday.
The PDP candidate won 17 of the 30 Local Government Areas (LGAs) in the Osun State governorship election.
APC candidate Oyetola won in the remaining 13 LGAs, according to results announced by INEC on Sunday morning.
The collation and announcement of results were held at the INEC office in Osogbo, the state capital.
In total Oyetola of the APC polled 375,027 votes while Adeleke of the PDP claimed 403,371 votes.
Adeleke, a former senator and younger brother to the state’s first governor, Isiaka Adeleke, defeated Oyetola, by a margin of about 44,426 votes.
Meanwhile, there were 13 other candidates that took part in the election including Akin Ogunbiyi of the Accord Party, Goke Omigbodun of the Social Democratic Party, and the former deputy speaker of the House of Representatives, Lasun Yusuf, who contested under the platform of Labour Party.
While thanking the people of Osun state for endorsing and affirming Ademola Adeleke’s governorship bid, the party sternly warns against any attempt to tamper with the result of the election.