The tribunal is expected to adopt the written addresses of Obi, the Independent National Electoral Commission (INEC), the All Progressives Congress (APC) and Bola Tinubu’s petitions.
The tribunal had earlier reserved judgment on the petition filed by the Peoples Democratic Party candidate, Atiku Abubakar.
Atiku and Obi are challenging the declaration of President Bola Tinubu as the winner of the election.