President of the Senate and Speaker of the House of Representatives
Section 50(2)(a) · 1999 Constitution (2004 edition)
What Constitution says
(a) if he ceases to be a member of the Senate or of the House of Representatives, as the case may be, otherwise than by reason of a dissolution of the Senate or the House of Representatives; or
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 43. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections