Invalid ballot papers 

1 Ballot papers are deemed invalid if they:

1. contain the names of more than one person;


2. are not official;


3. have been completed other than by hand;


4. contain defamatory remarks or obviously irrelevant markings;


5.    ...

2 Grounds for invalidity or nullity that relate to the cantonal procedure (official voting envelope, validation stamp, etc.) remain reserved.

3 In the case of electronic voting pilot schemes, the legislation of each canton conducting such a scheme determines the requirements according to which votes are validly cast and the grounds for invalidity.