The PDP and its Candidate, Alhaji Isah Ashiru are contesting INEC’s return of Gov Nasiru El-Rufai, candidate of the All Progressives Congress (APC) as duly elected.
The petitioners had, at the close of their case, presented 135 witnesses to prove the alleged mass rigging, ballot stuffing and violence recorded during the poll.
INEC had said it would present 10 witnesses in its defence with nine being the commission staff.
However, at resumed hearing on Monday, counsel to the commission, Aliyu Umar informed the tribunal that they could not open their defence as most of their witnesses were attending 2019 election review conference in Abuja.
The counsel said INEC would present 10 witnesses to defend its declaration of Gov El-Rufai as winner of the March 9 governorship elections, asking that the commission be given up to Thursday, July 18 to open its defence.