Lawyers for petitioner Dr Hewali Hemiya and sitting MP, Philip Undialu, will return to court on Friday for submissions.
Trial in this petition has been complete.
The trial judge will now hear final submissions from counsels before a ruling can be given.
Meanwhile, the other petition that was filed by Francis Potape also disputing Undialu's election as governor has been remitted to the National Court for trial.
The Supreme Court remitted Potape's petition for trial after a successful review.
Trial is yet to commence for Potape's petition.