Unlike elections, which take place in a number of constituencies, referendums involve an entire territory – be it at the level of the state or of a subordinate collectivity. Consequently, where partial annulment of the results does not affect the overall result, it must not give rise to a repeat ballot in the area in which the vote was annulled, since this would not lead to a different result. Unless the entire referendum is repeated, however, it must be possible to call a new partial referendum in part of the territory if the overall result is in question. However, careful consideration must be given to calling a new partial ballot rather than an entire new referendum, so as to avoid the massive concentration of campaign resources in a limited area (point II.4.3.e).