The lawmaker said he had withdrawn his candidature from NNPP before picking the ticket of the Labour Party.
The commissioner warned persons who might want to engage in violence to desist from it as the force was ready to deal firmly with such characters.
Shouts of “Obi! Obi!!” rented the air as the presidential candidate and his entourage arrived at the Rwang Pam township stadium for the rally.
The commission asked political parties and their candidates to comply with the rules to ensure peaceful and rancour-free campaigns.
INEC, PDP and Mr Adeleke were granted seven days to respond to the tribunal’s pre-hearing form.
“Waiting to benefit from the internal synthesis that may play out in the PDP is a wait in futility.”
The Election and Political Parties Monitoring Department (EPM) of the commission would track campaign activities, INEC said.
Political campaigns are set to commence of September 28, according to official timetable by INEC.
“For legislative elections, 1,101 candidates are vying for 109 senatorial seats and 3,122 candidates for federal constituencies, i.e. House of Representatives seats.”
The senate president’s candidacy has been a subject of controversy in the past few months.