Taken from here
I am a Spaniard and I was born five years before Franco’s death. I have also studied Spanish history.
IMHO, Franco did succeed in removing leftism from Spanish society. In fact, leftism was a very small minority when Franco died. Only some university students since some university teachers converted into the progressive religion when they interacted with European and American universities.
There were two problems:
1) The ideological basis of Francoist regime had been destroyed some years before by Council Vatican II. Franco saved the Church because Christian people were being massacred during the Spanish Civil War. The ideological basis of Francoist regime was National-Catholicism, which fused Traditional Catholicism with Spanish Nationalism.
But, some decades after, the progressives took over the Vatican and the Church during Council Vatican II. With this new church, the ideological basis of the Francoist regime was not sustainable.
With Catholicism converted in a variant of the progressive religion, there was no alternative to the progressive religion and democracy. The new Mass arrived in 1970 and Franco died in 1975. The Church appointed cardinal Tarancón as president of the Spanish Episcopal Conference (the boss of Spanish church) from 1971 to 1981.
Cardinal Tarancón was a progressive cardinal, in line of Council Vatican II and conducted Spanish church to «democracy», having frequent conflicts with Franco and with the people that supported Franco. Because of him and his successors, Spanish Catholic people remained silent while their religion was destroyed.
Franco was aware that his work was in danger. In his last words (https://es.wikisource.org/wiki/Testamento_de_Francisco_Franco), he states «Do not forget that the enemies of Spain and of Christian civilization are alert.»
2) When Franco died, the Cathedral took over. The Spanish transition to the democracy was designed by Rockefeller and implemented by King Juan Carlos, a corrupt person easily manipulable through sex and money. A pawn of the Cathedral. The progressive people took over the mass media and started de-Christianizing Spain and converting it to the progressive religion. Now we are one of the more Wokish nation in the world.