Article 53(2) states that supplementary voter lists will include, in particular, citizens residing on the territory of the precinct not included in the voter lists, as well as voters who come to the polling station with an absentee vote certificate. As stated in the Code of Good Practice,51 the registration of voters should not take place at the polling station on election day. Such a restriction is important to avoid possible multiple voting and is an incentive for voters to check their data in the voter register before election day. As noted in a previous Joint Opinion, “the situations in which voters are added to the supplementary voters’ lists should be narrowed in order to avoid potential doubts regarding the integrity of voters’ lists and possibilities for multiple voting.”