Time of elections to Houses of Assembly
Section 116(2) · 1999 Constitution (2004 edition)
What Constitution says
(2) The date mentioned in subsection (1) of this section shall not be earlier than sixty days before and not later than the date on which the House of Assembly stands dissolved, or where the election is to fill a vacancy occurring more than three months before such date, not later than one month after the vacancy occurred.
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 62. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections