1. if an election has not been held in a constituency or a polling district,
2. if a constituency candidate dies after the approval of the constituency nomination but before the election.
(2) The by-election shall take place not later than three weeks after the day of the general election if Paragraph (1), no. 1 applies and not later than six weeks after the day of the general election if Paragraph (1), no. 2 applies. The date of the by-election shall be set by the Land Returning Officer.
(3) The by-election shall take place in accordance with the same regulations and on the same basis as the general election.