The jurisdiction of the court is determined by the cause of action of the plaintiff as endorsed on the writ of summons or from both the writ of summons and the statement of claim. Where however, an action is commenced by Originating summons then it is the reliefs sought as well as the averments in the affidavit in support of the originating process that would be examined to discern if the court has jurisdiction. These would be relied on if the facts placed before the court as contained in the statement of claim or the affidavit in the case of originating summons are clear and unambiguous to enable it determine the issue. This is because it is the plaintiff who invokes the constitutional right for a determination of his right and accordingly the exercise of the judicial powers of the Constitution vested in the courts. See: A-G., Oyo State v. NLC (2003) 8 NWLR (Pt. 821) page 1; Akande & 2 Ors. v. Busari Alagbe & Anor, (2001) FWLR (Pt. 38) page 1352, (2000) 15 NWLR (Pt.690) 353; A.-G., Federation v. Guardian Newspaper Ltd. & 5 Ors. (2001) FWLR (Pt. 32) page 93, (1999) 9 NWLR (Pt. 618) 187; Messrs N. V. Scheep & Anor. v. The MV’s Araz & Anor. (2000) FWLR (Pt 34) page 556, (2000) 15 NWLR (Pt. 691) 622; NEPA v. Atukpor (2001) FWLR (Pt. 20) page 626, (2000) 1 NWLR (Pt. 693) 96; General Sani Abacha & 3 Ors. v. Chief Gani Fawehinmi (2000) FWLR (Pt. 4) page 557, (2000) 6 NWLR (Pt. 660) 228; Okulate & 4 Ors. v. Awosanya & 2 Ors. (2000) 2 NWLR (Pt. 646) page 530-6.
— Aboki, JCA. Action Congress v INEC (2007) – CA/A/101/07