▁On ▁one ▁hand , ▁after ▁he ▁and ▁Mu ñ oz ▁L edo ▁were ▁exp elled ▁from ▁the ▁P RI , ▁Cu au ht ém oc ▁C ár den as ▁was ▁nominated ▁president ial ▁candidate ▁by ▁the ▁Fr ente ▁Democr ático ▁Nacional , ▁a ▁coal ition ▁of ▁left ist ▁parties . ▁C ár den as ▁att ained ▁massive ▁popular ity ▁as ▁result ▁of ▁his ▁efforts ▁at ▁dem ocrat izing ▁the ▁P RI , ▁his ▁successful ▁ten ure ▁as ▁Governor ▁of ▁Mich o ac án , ▁his ▁opposition ▁to ▁the ▁a uster ity ▁re forms ▁and ▁his ▁association ▁with ▁his ▁father ' s ▁national ist ▁policies . ▁On ▁the ▁other ▁hand , ▁the ▁right - wing ▁opposition ▁party ▁P AN ▁nominated ▁Manuel ▁Cl outh ier ▁as ▁their ▁president ial ▁candidate . ▁A ▁business man - turn ed - polit ician , ▁Cl outh ier ▁became ▁popular , ▁spe cially ▁in ▁Northern ▁Mexico , ▁for ▁his ▁popul ist ▁r het or ic ▁and ▁his ▁denn oun cement ▁of ▁the ▁political ▁establishment ▁and ▁the ▁media . ▁ ▁On ▁E lection ▁Day ▁ 1 9 8 8 , ▁the ▁computer ▁system ▁used ▁to ▁count ▁the ▁votes ▁shut ▁down , ▁as ▁C ár den as ▁held ▁an ▁initial ▁lead . ▁That ▁event ▁is ▁remembered ▁by ▁the ▁phrase ▁se ▁c ay ó ▁el ▁sistema ▁(" the ▁system ▁crash ed "). ▁When ▁the ▁system ▁was ▁restored , ▁Carlos ▁Sal inas ▁was ▁declared ▁the ▁winner . ▁The ▁expression ▁" se ▁c ay ó ▁el ▁sistema " ▁became ▁a ▁eu ph em ism