Federal Act on Political Rights

¹Bal­lot pa­pers are in­val­id if they

a.

do not con­tain the name of a can­did­ate stand­ing in the con­stitu­ency;

b.

are not of­fi­cial;

c.

have been com­pleted or altered oth­er than by hand;;

d.

con­tain de­fam­at­ory re­marks or ob­vi­ously ir­rel­ev­ant mark­ings;

e.¹

…

²The fol­low­ing shall be de­leted from the bal­lot pa­per:

a.

su­per­flu­ous re­pe­ti­tions if the name of a can­did­ate ap­pears more than twice on a bal­lot pa­per;

b.

all names of per­sons whose can­did­a­cies were de­clared in­val­id due to mul­tiple can­did­acy fol­low­ing the rec­ti­fic­a­tion of the can­did­ate lists.²

³If the bal­lot pa­per con­tains more names than there are seats to be al­loc­ated, the last pre-prin­ted names on the list that have not been ac­cu­mu­lated by hand shall be de­leted fol­lowed by the last names that have been ad­ded by hand.³

⁴Grounds for in­valid­ity or nullity that re­late to the can­ton­al pro­ced­ure (of­fi­cial vot­ing en­vel­ope or val­id­a­tion stamp, etc.) re­main re­served.⁴

⁵In 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.⁵