The Senate President, Bukola Saraki, has listed the many sins of the President Muhammadu Buhari's administration and leadership of All Progressives Congress (APC) which he said culminated in his defection.
Mr Saraki, who dumped the APC for the Peoples Democratic Party (PDP) last month, was reacting to a statement by the APC leader Bola Tinubu.
Mr Tinubu had in a statement on Sunday said the Senate President left because of his presidential ambition.
"Much the same for Senate President Saraki. Returning to the PDP, he harbors dreams of the presidency but Tambuwal's ambition will dwarf Saraki's when the two collide. If Saraki had remained in the APC, he would be unable to reclaim his Senate seat let alone the Senate Presidency. He thus bolted because he lusts for the presidency but was promised by the PDP, at least, a return to his position in the Senate.
"For Saraki to talk about lack of governance is for him to deny who he is and the position he holds. This man stands as Nigeria's Number 3 citizen. Clothed is he in ample power and influence. If he saw areas where government and the nation needed help, he could have easily applied his energies to these areas. He could have drafted legislation and easily got laws passed.
"However, no progressive enactment bears his name for he cared not for progress. He has been more focused on changing the rules of the Senate to favour himself and changing the order of elections so as to coincide with his selfish designs," Mr Tinubu said.
Mr Saraki in a statement on Monday said the reasons advanced by Mr Tinubu were false and mischievous.
He listed as reasons for his exit 'contempt' for the National Assembly by the Buhari administration.
"I have always restrained from joining issues in the media with Asiwaju Bola Ahmed Tinubu and this is based on my respect for him. However, I will not allow him to create a wrong, false and mischievous impression about the reasons for my decision to exit the All Progressives Congress (APC) and present his prejudice as facts for public consumption.
"I have been consistent in my complaints to all leaders of the APC, including Tinubu, that a situation where the National Assembly is not constructively engaged or carried along in key policy decisions, particularly those that will eventually require legislative approval, is not in the best interest of the nation.
"No genuine leader of the legislature will be comfortable that the Presidency will simply write a terse letter to the National Assembly on key issues which the federal legislature is expected to later deliberate upon and give its approval. The Buhari administration consistently treats the legislature with contempt and acts as if the lawmaking body should be an appendage of the Executive. To me, this is unacceptable.
"In the same way, I find it very objectionable that many stakeholders who worked strenuously to get the administration into office have now been excluded in the government and not consulted on key decisions as necessary and expected. In fact, some of them are treated as pariahs. A party that ignores justice, equity and inclusion as basic pre-conditions for peace, unity and stability cannot sustain its membership and leadership."
Mr Saraki flashed back to his statement announcing his exit from the APC. He emphasised that the decision to leave was imposed on him by 'certain elements and forces within the APC who have ensured that the minimum conditions for peace, cooperation, inclusion and a general sense of belonging did not exist.'
He added that the 'elements' had made sure that party principles required for a healthy functioning were deliberately violated.
The Senate President accused Mr Tinubu of siding with President Buhari in his reconciliatory move rather than addressing his grievances.
The statement reads further, "Tinubu himself will recall that during the various meetings he had with me at the time he was pursuing reconciliation within the APC, I raised all the above issues. I can also vividly recall that he himself always expressed his displeasure with the style of the government and also mentioned that he had equally suffered disrespect from the same government which we all worked to put in office. I also made the point that whatever travails I have gone through in the last three years belong to the past and will not shape my decisions now and in the future.
"However, during those meetings, the point of disagreement between Tinubu and I is that while I expressed my worries that there is nothing on ground to assure me that the administrative style and attitude would change in the next four years in a manner that will enable us to deliver the positive changes we promised to our people, he (Tinubu) expressed a strong opinion that he would rather 'support a Buhari on the hospital stretcher' to get a second term because in 2023, power will shift to the South-west. This viewpoint of Tinubu's was not only expressed to me but to several of my colleagues. So much for acting in national interest.
"It is clear that while my own decision is based on protecting the collective national interest, Tinubu will rather live with the identified inadequacies of the government for the sake of fulfilling and preserving his presidential ambition in 2023. This new position of Tinubu has only demonstrated inconsistency -- particularly when one reviews his antecedents over the years."
Flashing back their differences to build up to the 2015 general elections, Mr Saraki accused Mr Tinubu of peddling falsehood on his defection.
"Again, let me reiterate my position that my uncertain and complex relationship with Tinubu has been continually defined by the event of 2014 when myself and other leaders of the APC opposed the Muslim-Muslim ticket arrangement about to be foisted on the APC for the 2015 polls. It should be noted that he has not forgotten the fact that I took the bull by the horns and told him that in the interest of the country, he should accept the need for the party to present a balanced ticket for the 2015 General Elections in terms of religion and geo-political zones. Since that time he has been very active; plotting at every point to undermine me, both within and outside the National Assembly.
"It is a surprise to me that Asiwaju Tinubu is still peddling the falsehood about the fact that my defection is about automatic ticket and sharing of resources. Members of the public will recall that when the issue of my decision to quit APC came to the fore and many APC leaders were holding meetings with me, a newspaper owned by the same Tinubu published a false report about the promise of automatic tickets, oil blocks and other benefits. I immediately rebutted their claims and categorically stated that I never discussed any such personal and pecuniary benefits with anybody. My challenge that anybody who has contrary facts should come forward with them still remains open.
"It should be known that Democracy is a system that allows people to freely make their choices. It is my choice that I have decided to join others to present a viable alternative platform for Nigerians in the coming elections. Tinubu and leaders of the APC had better respect this decision or lawfully deal with it. As for me, Allah gives power to whom He wishes. Human beings can only aspire and strive to fulfill their aspirations."
Since his defection to the PDP last month, Mr Saraki has been under intense pressure from APC leaders and lawmakers insisting he vacate the seat since his party is now a minority in the senate.
Mr Saraki has vowed to keep his position.