The presentation will deal with discursivity related to the Argentinean national election of 2023, particularly during its last phase (November 2023). The national election confronted candidates Javier Milei (far right) and Sergio Massa (left) against each other, in a head-to-head competition that gave rise to interesting phenomena of a discursive nature and hence, of interest for semioticians. The presentation will analyze a set of texts of visual nature and of political content dealing with these two candidates, which the author found in the streets of Buenos Aires, Argentina, during November 2023. To begin with, we will address the meaning of the confrontation between these two specific candidates in the context of Argentine politics (specifically, what it means in terms of the polarization and the gap that are characteristic of the country’s politics). Then, we will study how this adversative discursive dynamic (Verón, 1987) could be seen in action in the specific texts that constitute the proposed corpus. For that purpose, we will work with visual interventions found on the public walls of Buenos Aires, with the aim of elucidating some of the mechanisms of sense- and meaning-making in this form of anonymous and unofficial communication, which could be approached using the concept of semiotic guerrilla.