Nigerian President Muhammadu Buhari launched his manifesto on Sunday, hoping his anti-corruption agenda can win him a second term at a February 16 election.
Buhari, a military ruler in the early 1980s, in 2015 became the first opposition candidate to oust a president through the ballot box.
His focus on corruption may be offset by Nigeria's slow growth. The country emerged from its first recession in a quarter of a century - largely caused by low crude prices – last year.
In his first term, Buhari ordered government revenues and funds recovered in corruption investigations to be placed in a central bank account known as the Treasury Single Account (TSA).
That had protected government coffers from corruption when oil receipts - which make up two-thirds of revenues - were low, he said.
"We are committed to deepening the work we started this first term such that the nation's assets and resources continue to be organized and utilized to do good for the common man," he said at the manifesto launch.
Buhari said Nigeria had a chance to make "a break from its tainted past which favored an opportunistic few".
Despite the president's focus on tackling corruption, there have not been any significant convictions related to graft in his first term. The main opposition party has accused Buhari of focusing on its members, which the presidency denies.
The campaign team of opposition candidate, former vice president Atiku Abubakar, said Buhari's manifesto was an "anti-climax" and did not address Nigerians' economic problems.
"If the state of the average Nigerian has not improved in the last three and a half years, more of the same is obviously not what they need," it said in an emailed statement.
Abubakar is expected to unveil his policy plans on Monday.