On Wednesday, the Guardian/UK revealed new evidence showing a close relationship between Mexico's presidential frontrunner, Enrique Peña Nieto, and predominant broadcasting company Televisa, ahead of Sunday's presidential elections. According to the Guardian, a secret unit inside of Televisa was assigned to run a covert campaign for Nieto in 2009 among other pro-Nieto activities. The discovery supports accusations that Televisa has systematically promoted Nieto during this year's presidential race.

Enrique Peña Nieto waves during a rally in Atlacomulco, Mexico. (Mario Vazquez/AFP) Nieto is running for PRI (Partido Revolucionario Institucional), which held power in Mexico for 71 years, ending its reign in 2000.

A massive student movement broke out this year protesting both Nieto's candidacy and what students saw as biased news coverage in favor of Nieto. The movement labeled #YoSoy132, or 'I am 132', found widespread success through online sources such as YouTube.

The Guardian's report traces a cache of documents dating back to 2005 that expose Televisa's sale of favorable coverage to a number of politicians, including Peña Nieto.

Televisa denies the allegations.

* * *

The Guardian/UK: Mexican media scandal: secretive Televisa unit promoted PRI candidate

* * *

Members of the "Yosoy 132" (I Am #132) movement demand fair broadcasting and electoral coverage during 90,000 strong protest in Guadalajara city, Mexico on June 10, 2012.