The election runner-up Obrador has published an open letter accusing Nieto and his governors of using state money to secure votes:
Still, the most perverse and illegal maneuver was the recruitment of the governors of the Institutional Revolutionary Party (PRI, in its Spanish initials) to take charge of buying votes without any moral scruples whatsoever.
On June 12, in Toluca, in the governor’s palace of the State of Mexico, 16 governors of the PRI party met with Peña Nieto and his campaign staff. There, they assigned quotas for how many votes each state would create for their leader.
For example, Eruviel Avila, governor of the State of Mexico, promised to obtain 2.9 million votes that – by coincidence – Peña Nieto was said to have won in that state. The decision that came out of that governor’s meeting in Mexico State was to use state government money to buy millions of votes throughout the country.
One piece of evidence that has been very well documented was the way that the governor of Zacatecas, Miguel Alonso Reyes, operated when he assigned his key operatives, at the municipal and electoral district level – and this is documented – that in his state along he spent millions of pesos to buy voter credentials and votes.
Throughout the country suffrage was acquired with cash, with electronic cards to obtain merchandise in supermarkets, with basic food stuffs, construction materials, fertilizers and other benefits.
Nieto is also facing protests from the popular #YoSoy123 movement. (And a note for the US "all cops are bastards" contingent: At one demonstration, a police officer broke ranks and joined the protesters. See? Police officers sometimes come around to the demonstrators' side—but are probably a lot less likely to if said demonstrators are screaming insults at them. You catch more flies with honey, yadda yadda.)
Analysts doubt Nieto will be prohibited from taking office for any reason. But his victory—and the return of the PRI—smells a lot less triumphant.