Now more than ever message transmission is leading a radical change in communication. We are witnessing the parallel proliferation of information and its pollution at a global scale. Political parties and candidates have been given new platforms where they can communicate directly with their electorate, and citizens themselves are given platforms that were previously the exclusive domain of political parties. Traditional advertisement has been replaced by new forms of communication that try to adapt messages to specific sections of the electorate as well as new communication channels. As a result, messages have become increasingly personalised. Those that design campaigns do no longer have to think about the masses, as most individuals are already either convinced or lost. Therefore, they must rather concentrate on the small group of swing voters, for which the campaign techniques gain a one-to-one or many-to-many focus. This change created by technology has direct consequences on various actors who are subject to the electoral legislation. They concern the specificity of data protection regulation; the use of censuses and databases; the purchase of online advertisement, especially on social media during election periods; the activity of individuals on social media the day before the election; or the publication of electoral polls on web pages that are not rooted in the national territory.