Chief Whip of the Senate, Orji Uzor Kalu (left), Senate President Ahmad Lawan and Presidential Candidate of the All Progressives Congress, Asiwaju Bola Ahmed Tinubu (right) during a visit by the latter to the Senate President in AbujaPresidential Candidate of the All Progressives Congress, Asiwaju Bola Ahmed Tinubu (right) during a visit by the latter to the Senate President in Abuja, Saturday