Article 25(1) states that voters fill in a “form of the declaration regarding the abstention from multiple voting and the confirmation of the exercise of the voting right in secret” they receive in the voting material (Article 22(g)). Such legislative requirements can be compared to an oath but do not guarantee secrecy. It is however a “safeguard” found in other electoral systems that allow for non-supervised postal voting.39 Apart from that, it is not clear from Article 25(1) what happens if this form has any identification signs on it (name, surname, registration number, ID number). If so, that would mean that if such a form would be found in the inner envelope that would make ballot papers invalid. This case should be added to Article 28(1) which includes an exhaustive list of cases when the ballot is considered invalid.