“The silence period, or so-called day of reflection, is a short period of time (usually a day) preceding the elections to allow voters to absorb and digest all the information received during the election campaign and to make a choice without pressure” (CDL-AD(2009)031, para 64). In practice, most CoE member states prohibit any electoral campaigning during this short period of time. However, in some countries, the electoral legislation does not foresee a campaign silence period, and campaigning on election day is not prohibited except in the media and/or inside or near polling stations (e.g. Czech Republic, Denmark, Georgia, the UK, and, for the first time, in the Republic of Moldova 2019). In some other states (e.g. Cyprus, Malta, Ukraine), campaign silence provisions are not always respected, particularly not on social networks. The shift of electoral campaigning to online platforms has made it more difficult to monitor the observance of such provisions. This is all the more difficult since many violations of election silence originate from websites operating outside a particular state’s jurisdiction.