The result on Sunday was a debacle for the Socialists, who had led Catalonia's coalition government, but who won only 28 parliamentary seats, their worst result in the region since the late 1970s.
Together with the suspicions he had started to harbour that a socialist government might misuse ecclesiastical patronage, the Prayer Book debacle turned Henson from a strong proponent of establishment to its best-known critic.
After the GOP debacle in Cleveland, Democrats, even left-wing Sanders Democrats and socialists, will want to show that they are the grown ups, capable of being members of a functioning democracy and being part of a sane governing coalition.
After it failed two years later, amid ferocious repression, he went into exile in France, from where he later criticised Ait Ahmed, the leader of the socialist front forces and the rebellion, in his book, Hope And Treason, blaming him for the debacle.
On May 22, he was one of the few Socialist mayors of Andalusia to win re-election, in what proved to be an unprecedented debacle for his party in regional and municipal elections across Spain.
The debacle Sunday, however, suggests that whoever replaces him at the helm of the Socialists will struggle to defeat the Popular Party's leader, Mariano Rajoy, in the next general election.
After the Waldheim debacle, Sinowatz resigned as chancellor, and the Socialist Party under Franz Vranitzky called for new elections, which resulted in a grand coalition of the Socialist and Austrian People's parties.
To win the support of the Soviet, still dominated by Socialists Revolutionaries and Mensheviks, Kerensky did not prosecute the Bolsheviks for the July putsch and allowed them to emerge unscathed from the debacle.
