I made one some time ago, it was ASBish but pretty dystopic, so I'll upgrade it as much as I can:
the POD is that Emilio Mola avoids the plane accident in 1937, so he finally becomes the main head of the Nationalist movement.
After the Nationalist victory, he becomes the head of a military Junta that centralizes the Republic and exterminates all Leftist and peripheral nationalist sympathizers. This depuration process takes years and leaves a death toll of aproximately two millions, as Mola starts becoming paranoid and senile, and resistance from Monarchists and even Catholic Conservative groups becomes higher.
Finally, in 1956, with the country still isolated and dirt-poor, and the international community still aknowlegding the Spanish Republic in exile (wich is quite leftist, but at least declares itself neutral, and even the most hawkish politicians in the U.S. are too scared of the also anti-American and anti-capitalist Mola regime to collaborate with it), fearing a coup of inner dissidents (wich at this time include Franco), the core loyalist members of the shady Junta approve a "special measures" program, stating that they're under inminent foreign and fifht-columnist attack, decimating their own ranks and using the cartoonish figure of Franco as a scapegoat, stating that they'll go further in their reform of Spain. The pack of measures included:
-An economic Stabilization plan, which cimented Spain's self-reliance, but heavily focused on heavy industry. All the Spanish enterprises were de-facto nationalized.
-The definite closing of all borders.
-Carlism and Falangism were to be supressed as Anti-Spanish and subversive.
-The Junta and the remaining loyal civil politicians were to be integrated in a single political force with a core, definite ideology of self-reliance, national interest and infalibility of the State, wich was called Convergencia Nacional or NAZCON.
-Freedom of movement was to be eliminated.
-An intensive surveillance program was to be implemented.
-As the papacy had become increasingly critical with the Spanish government, Rome was to be shown as corrupted by the Red conspiracy, and so the Spanish church would break away from the main one, with Mola as the maximum religious authority, in direct line with God. With time,church and state would not only be jointed, but undistinguishable from one another.
-New ministries would be built, in the Spartan, monolithic style of the El Escorial fortress.
-Schools of theopolitics would be formed, in order to create a class of technicians/priests/politicians to be formed in the new national principles.
-From now on, Franco would be the responsible of all evils.
It's 2010, and the living standards are still, for the majority of the population, those of post-war times. As far as the population thinks, totally disconnected from reality as it is, since 1960 Spain has recovered its former glory and has restored her Empire, now also encompassing half of Africa, and it's at a perpetual war with the Soviet Union (that now encompasses all of Eurasia minus Iberia), and the Oceanic Federation, which ecompasses the English-speaking world and Portugal. Very little is known about the main ideologies that rule the enemy superstates, as well as the thoughts of the Francoist dissisents ("Bolshevism" and "Masonry", respectively), but they're assumed as vile abominations.
Nobody has seen Mola in public since a long time ago, but we can be pretty sure that he will never die.