This confusion results in a ballot for one polling place being deposited in the ballot box corresponding to an officially different polling place, giving both an undervote for the correct polling place and an overvote for the incorrect one. According to the COFIPE (Federal Code of Electoral Institutions and Procedures), article 231 a ballot which is placed in the wrong box should be moved to the correct box if possible (as is the case, for example, if the presidential ballot is deposited in the senatorial ballot box), but should in any case be counted and reported. A single such vote would appear as both an undervote and an overvote in the analyses and reports mentioned above.