1 If a multiple candidacy is discovered following the rectification of the candidate lists, the candidacy concerned shall be declared invalid on all the lists affected:
by the canton, where the same candidate appears on more than one list in that canton;
by the Federal Chancellery, where the same candidate appears on lists in more than one canton.
2 The cantons concerned and the Federal Chancellery shall inform each other immediately of the candidacies that have been declared invalid.
3 Where possible, the names of persons whose candidacy has been declared invalid shall be deleted from the lists before they are published.
4 The declaration of the invalidity of a candidacy on lists that have already been published shall be published immediately in electronic form in the Federal Gazette and in the official gazette of all the cantons concerned.