Election: single candidate and two or more candidates
Section 179(2) · 1999 Constitution (2004 edition)
What Constitution says
(2) A candidate for an election to the office of Governor of a State shall be deemed to have been duly elected where, there being two or more candidates - (a) he has the highest number of votes cast at the election; and (b) he has not less than one-quarter of all the votes cast in each of at least two-thirds of all the local government areas in the State.
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 83–84. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections