Supplementary elections 

If the number of councillors of the municipality during the electoral term decreases so that it is less than three quarters of the number laid down in the law, the chairperson of the local council shall notify the Ministry of Justice of this. The Ministry may then order supplementary elections to be held, and at the same time it shall order the number of councillors to be elected in the supplementary elections. The provisions of this Act on elections apply, as appropriate, to supplementary elections. However, advance voting is only conducted in the municipality for which the councillors are elected.