President Bola Tinubu promised "a better tomorrow" for Nigerians while kicking off his next electoral campaign, while also blaming his rivals for poverty plaguing Africa's most populous nation.

Nigeria's President Bola Tinubu on Saturday formally launched his campaign for a second term.

"We have prosperity, consistency, growth, recovery and opportunity," Tinubu said at a rally in the northwestern state of Kaduna.

"You grant me the privilege to promise you once again, there is that promise of a better tomorrow," he added.