In a purely civil matter, the filing of a process a day after the period prescribed for the filing can be regularized on the application of the defaulting party. But in election matters, even a slight infraction of the rules, particularly those relating to time, can be fatal to the process filed. See Benson v. Allison (1955-56) WRNLR 58, Emerue v. Nkerenwen (1966) 1 All NLR 63, Ige v. Olunloyo (1984) 1 SCNLR 158. An election petition is a proceeding sui generis. See Buhari v. Yusuf (2003) 6 SC (Pt. 11) 156. In the circumstances, appellants could not have filed a motion for extension of time and if one had been filed it could not have been entertained by the tribunal. See Paragraph 18(5) of the 1st Schedule to the Act (supra).
— N.S. Ngwuta JSC. Yaki (Rtd) & Anor. V. Senator Bagudu & Ors. (SC.722/2015, 13 Nov 2015)