(1) The ballot papers, which are not printed on the prescribed form shall be invalid. The ballot papers, on which more than one candidate is marked, or the ballot papers on which no candidate is marked shall also be invalid. The votes in support of candidates who resigned their candidature (Section 12) or died shall not be taken into account.

(2) Should there be more than one ballot paper in an envelope, the Precinct Election Committee shall exclude a ballot paper, on which no candidate is marked. Should there be more than one ballot paper in an envelope, on which the same candidate is correctly marked, the Precinct Election Committee shall count only one ballot paper. Should there be more than one ballot paper in an envelope, on which different candidates are marked, all ballot papers shall be deemed invalid.

(3) Should there arise doubts about validity of a ballot paper, a final decision on validity of the ballot paper shall be taken by the Precinct Election Committee.