Opposition politician, Mr Peter Obi has again responded to those criticizing his commitment to a single tenure in office.
Obi, former presidential candidate of the Labour Party, has been facing backlash over his one tenure pledge.
Apart from Governor Chukwuma Soludo of Anambra State, the presidency has also blasted him.
Presidential spokesman, Bayo Onanuga, branded Obi a liar, adding that he was also wrong to equate himself with Nelson Mandela.
Obi has now responded again to the many attat, insisting that four years is sufficient to turn Nigeria around if leadership is driven by genuine service and not personal ambition.
In a post on his social media pages on Tuesday, he said he finds it baffling that his one-term pledge is generating widespread debate, stressing that a sincere leader can achieve significant progress within a single four-year term.
He added that his motivation is rooted in a desire to see Nigeria work, not personal ambition.
The former Anambra State governor also challenged anyone to investigate his past political campaigns, maintaining that he has never been involved in electoral malpractice, thuggery, or ballot box snatching.
He said: "I still find it baffling that my decision to do a term of four years, if given the mandate to rule this country, is generating so much agitation. By this feeling, we are doubting the fact that a sincere leader can achieve much in 48 months.
"I have never been desperate in the pursuit of power, or anything else, for that matter. There are some traits associated with desperation, which in no way are in any of my political behaviours in the past and now, like engaging in overly aggressive rhetoric or actions to prove a point or gain attention; becoming overly defensive or reactive to criticism, often to the point of appearing paranoid.
"Making unrealistic or unfulfillable promises to win support or approval, resorting to personal attacks or character assassination to discredit opponents or frequently changing positions or policies to suit immediate political needs.
"Throughout my political journey, I have never been involved in thuggery, the snatching of ballot boxes, or any form of electoral malpractice. I challenge anyone: conduct your investigations. You will find no stains of rigging or violence associated with my name. I have always chosen the path of peace, principle, and civility.
"In four years we can confront corruption head-on, redirecting resources to priority areas. For instance, the trillions used to acquire new presidential jets and other unnecessary expenses at this time could have been channelled into education, healthcare, or infrastructure.
"Within the same period, we ensure that the rule is sacrosanct and the rule of law is strictly followed. Within the same period, we can conduct free, fair and credible elections."