The changes in the way we communicate about politics, made possible by the internet, are reflected in the ways in which political advertising is carried out and in the format of electoral campaigns. Electoral propaganda, which used to be restricted to the Free Electoral Hours, rallies and street advertising, stickers and banners, is now also taking up space in digital media. Aware of these transformations, the 2017 electoral micro-reform reformed the general ban on paid advertising on the internet and began to allow the use of content boosting as the only form of legal paid electoral advertising on the internet.

Allowed since the 2018 elections, the uses of content boosting, its scope and impact are still fields to be better explored. This project seeks to understand how these new boosting tools are being used by candidates in electoral processes. To this end, we analyzed how much candidates have spent on boosting and how this spending is carried out, comparing it with other expenses. We also investigated which are the main platforms used for this purpose and how the candidates make their announcements.