From the foregoing judicial decisions, it is clear that in election petition litigation, whether the witnesses which a party intends to call are ordinary or expert witnesses and whether they are willing or subpoenaed witnesses, their witness depositions must be filed along with petition before such witnesses will be competent to testify before the tribunal or court.
— H.S. Tsammani, JCA. Peter Obi & Anor. v INEC & Ors. (2023) – CA/PEPC/03/2023