Digital Drivers of Autocratisation: The Role of Information Pollution in Polarisation and Democratic Backsliding in Mexico

Information pollution poses a significant threat to democracy worldwide, and Mexico provides a critical case study of this growing problem. This study presents and applies a holistic analytical framework to detect the enabling and driving factors of information pollution, investigating its impact on democratic quality during the administration of Andrés Manuel López Obrador (2018–2024). Drawing on 20 expert interviews, findings reveal that structural socio-economic inequalities, weak institutional transparency, and media concentration indirectly enabled information pollution, while divisive populist rhetoric and a post-factual political style directly drove its rise. These dynamics contributed to affective polarisation, eroded trust in democratic institutions, and reduced press freedom. The study concludes that combating information pollution requires legal reforms, media literacy initiatives, and enhanced transparency. By focusing on a non-English speaking, deficient democracy, the study broadens the empirical base of understanding disinformation’s role in the global wave of autocratisation.