In the cantons where the election is held under the system of proportional representation, a candidate's name can only appear on one list for the National Council. If their name appears on several lists in the same canton (multiple candidacy), the cantonal authority responsible for organising the election must automatically strike them off all the lists. If their name appears on the lists of several cantons, the Federal Chancellery automatically deletes it from all the lists except the first list it receives.