(1) Voters shall drop the ballot paper in the ballot box in such a way as to preserving secrecy.

(2) If a voter gives notice, before placing the ballot paper in the ballot box, that he filled in the ballot paper erroneously, the polling station commission shall withdraw the spoilt ballot paper, shall put it into an envelope reserved for this specific purpose and issue a new ballot paper in place of the spoilt one. The polling station commission may issue a new ballot paper in place of a spoilt one only once for each voter and for each type of ballot paper.