(1) If on the individual list fewer  candidates run than the number of eligible representatives or there was no candidate or candidate for mayor or Lord Mayor in the single mandate constituency, the election shall not be held, and by-election shall be called.

(2) If in a single mandate constituency the most votes have been attained by two or more candidates with equal number of votes, by-election shall be called.

(3) If two or more candidates for mayor or Lord Mayor have received the most votes of equal number, by-election shall be called.

(4) If in the individual list election less representatives are elected than the number determined in this Act, by-election shall called for the representative seats not filled.

(5) If the mandate of the single mandate constituency representative or the mayor, the Lord Mayor terminates, by-election shall be called.

(6) If the body of representatives of the municipality has been dissolved or has dissolved, by-election shall be called.