Mexican presidents Miguel de la Madrid, in the early 1980s and Carlos Salinas de Gortari in the late 1980s, started implementing liberal economic strategies that were seen as a good move. However, Mexico experienced a strong economic recession in 1982 and the Mexican peso suffered a devaluation. Presidential elections held in 1988 were forecast to be very competitive and they were. Leftist candidate Cuauhtémoc Cárdenas, son of Lázaro Cárdenas one of the most beloved Mexican presidents, created a successful campaign and was reported as the leader in several opinion polls. On July 6, 1988, the day of the elections, a system shutdown of the IBM AS/400 that the government was using to count the votes occurred, presumably by accident. The government simply stated that ""se cayó el sistema"" ("the system crashed"), to refer to the incident. When the system was finally restored, the PRI candidate Carlos Salinas was declared the official winner. It was the first time since the Revolution that a non-PRI candidate was so close to winning the presidency.