The Superior Chamber of Mexico's Electoral Tribunal (TEPJF) upheld the National Electoral Institute's (INE) decision not to investigate the so-called "operación acordeón" due to insufficient evidence. The allegations involved the Mexico City government and the Morena party, accused of orchestrating the production and distribution of "acordeones"—materials purportedly used to influence the judicial election by mobilizing voters. Despite some magistrates expressing concern over the lack of thoroughness, the tribunal affirmed the refusal to initiate an investigation, citing the absence of concrete proof beyond media reports. This ruling effectively ends the inquiry into alleged electoral manipulation linked to the Morena party and city officials during the judicial election process.