Adeleke had only just been cleared by the APC's screening committee to contest under the banner of the party.
Adeleke had only just been cleared by the APC's 5-man screening committee to contest the July 8 election under the banner of the party.
He was present at the Iwo Township Stadium on Wednesday, June 14, 2017, in Osun state amidst cheers from members of the PDP present for the party's primary election.
The brother of the late Senator Isiaka Adeleke is believed to have had a problem with the party after the National Working Committee cleared his only opponent, Mudasiru Hussein, to contest against him after he had been disqualified by the screening committee led by Hon. Sanusi Rikiji.
He stated this in the resignation letter he addressed to the party's leadership dated June 13, 2017.
Hussein had been disqualified by the committee on the grounds that he did not resign within the period stipulated by party's guidelines, which states that a candidate must not "remain in the public service within 30 days prior to an election."
Claiming that he resigned from his position as Osun state Commissioner on June 6, thereby fulfilling the 30 days requirement for the July 8 election, Hussein's appeal against the committee's decision was rejected by an Appeal panel.
However, the National Working Committee upturned the decision and cleared Hussein.
Adeleke's brother, Isiaka, had been occupying the senatorial seat until his death on 23 April 2017.