Abstract: Social media has invaded elections in Mexico. However, the power of citizens through the use of this platform is still unknown. Many citizens criticize political candidates using Twitter, others build networks and some others try to collaborate with candidates. This research is focused in understanding this kind of behavior, analyzing the case of the presidential candidate Enrique Peña Nieto (PRI) in Mexico who won the presidency with a large participation but without the support of Twitter users. After two online protests against this presidential candidate – #IamnotProletariat and #Iam132 – political image could have been undermined and voters could have thought differently. But this was not the case and despite of this, the candidate won. The challenge to understand this online protest and its link to the political campaign is addressed in this paper.