A former presidential candidate from Mexico's Revolutionary Institutional Party (PRI), which ruled uninterrupted for seven decades, has hinted that the 2006 presidential elections might have been rigged.
Roberto Madrazo has said that according to information he had at that time, Andres Manuel Lopez Obrador - who was elected president in July - was ahead of former President Felipe Calderon during the 2006 elections.
In a radio interview on Wednesday - a day after the country marked the 50th anniversary of the Tlatelolco student massacre - Madrazo said that while the elections were taking place, he could see Obrador's lead . . .