He is the founder of the political marketing firm Numen Publicidad and co-owner of the ultraconservative outlet La Derecha Diario, which he operates in partnership with Spanish pseudo-journalist Javier Negre. Cerimedo has claimed involvement in high-profile political campaigns across Latin America, including those of Jair Bolsonaro in Brazil, Javier Milei in Argentina, and José Antonio Kast in Chile, though many of these assertions are exaggerated, unverifiable, or demonstrably false.
Cerimedo has claimed to have learned campaign techniques from the Obama campaign, met Eduardo Bolsonaro at Harvard, and even worked at the White House. None of these claims are supported by public records. While it is possible he volunteered informally on a U.S. campaign, American election law prohibits non-citizens and non-permanent residents from paid political work. Former Obama campaign staff have also denied any association with him.
He has also claimed to have worked on Jair Bolsonaro’s 2018 presidential campaign, particularly on contrast messaging, though no independent evidence substantiates this. What is confirmed is that during the same period, Cerimedo was employed by Peronist candidates in Argentina, ideologically opposed to the figures he is now associated with. His role focused on digital strategy, helping campaigns that were traditionally reliant on door-to-door operations adapt to new online communication methods.
After the start of the COVID-19 Pandemic, he sought to work as a consultant to Patricia Bullrich, one of the country’s most prominent right-wing politicians. He claimed to her team—without evidence—to have worked on Donald Trump’s campaign. This is legally dubious: while U.S. law allows unpaid foreign volunteers to assist with campaigns, Cerimedo’s lack of U.S. citizenship or residency would have made paid involvement illegal, and Donald Trump himself has argued that even volunteer participation by foreigners can constitute election interference. Bullrich ultimately did not run in that cycle, but Cerimedo claimed he went on to work for several right-wing Argentine politicians in 2021.
In Chile, Cerimedo implied involvement in José Antonio Kast’s 2021 presidential campaign, though no substantive evidence confirms this. He did commission polling during the 2021 constitutional referendum, inaccurately predicting a close result. In reality, the call for a new constitution passed with 78% in favor, starkly contradicting his projections. For the 2022 constitutional vote, which was ultimately defeated, Cerimedo claimed involvement in the “against” campaign, a claim denied by campaign sources. However, his platform La Derecha Diario played a role in spreading disinformation during the process, including false reports that President Gabriel Boric had suffered a nervous breakdown following the result.
Cerimedo’s first major role of regional prominence came during Brazil’s 2022 presidential election, when he was visited in Buenos Aires by Eduardo Bolsonaro, son of then-president Jair Bolsonaro, between the first and second rounds of voting. While Cerimedo later claimed deeper involvement in the campaign itself, his most visible and verifiable contribution came after Bolsonaro’s defeat. He emerged as a central figure in the far-right election denial effort that helped lay the groundwork for the January 8th attacks on Brazil’s democratic institutions. Using La Derecha Diario and a coordinated digital disinformation campaign, Cerimedo amplified unsubstantiated claims of electoral fraud, contributing to the delegitimization of Brazil’s electoral system and the broader destabilization effort led by Bolsonaro’s inner circle. Brazilian courts have legally sanctioned him for these efforts.
In 2023, Cerimedo joined the successful presidential campaign of Javier Milei. Following Milei’s victory, Cerimedo used the campaign as a springboard to elevate his international profile, with comparisons emerging to global far-right strategists such as Steve Bannon and Hungary’s Árpád Habony.
Despite a well-documented record of exaggerating his credentials, fabricating affiliations, and promoting disinformation, Cerimedo maintains a position of influence within Latin America’s far right. His co-ownership of La Derecha Diario—known for fake news, election denial, and anti-leftist agitation—has made him a central player in constructing the transnational far-right infrastructure across the region.
