The National chairman of the All Progressives Congress (APC), Adams Oshiomhole, says many retired generals have ganged up against the re-election bid of President Muhammadu Buhari.
The former Nigeria Labour Congress (NLC) chairman said the generals do not want Buhari to spend eight years in office.
Oshiomhole was speaking on Saturday at the party's presidential rally in Minna, Niger state.
"Many of the retired generals are ganging up against President Buhari, that he will not do eight years while they did more than eight years," he said.
"The generals, especially past leaders, have ganged up and reached a conclusion that President Buhari should not continue.
"When he ruled more than eight years, and when he ruled for more than eight years, they do not want Buhari to complete his tenure.
"Why do they believe Nigeria belongs to them?
The APC chairman told the people to disregard rumours that the ruling party had plans to rig the elections.
"As a progressive, I strongly believe in one man one vote, one General one vote, one woman one vote, one youth one vote. I don't believe in rigging," he said.
He said Atiku Abubakar, presidential candidate of the Peoples Democratic Party (PDP), would have stayed back in the US if he saw the crowd that received Buhari in Kaduna and Bauchi states.
Abubakar returned to Nigeria on Saturday after a two-day trip to US.
"If Atiku had seen the mammoth crowd in Kaduna and Bauchi States that welcomed us, he would prefer to remain in the United States of America," Oshiomhole said.