Election of Governor: general
Section 178(2) · 1999 Constitution (2004 edition)
What Constitution says
(2) An election to the office of Governor of a State shall be held on a date not earlier than sixty days and not later than thirty days before the expiration of the term of office of the last holder of that office.
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. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections