This is American History 901.
You are not taught this stuff in school. You'll only find it if you've dedicated your life to exploring the Black Hole that is the political history of this country. If you've done that then you know already that Obama's coronation, achieved by stealing half plus four of Hillary's delegates in Florida and Michigan, is no historical anomaly. But neither is it the most egregious instance of electoral fraud in U.S. history. That would be the election of 1960.
A lot of people know, or think they know, that Kennedy defeated Nixon thanks to the cemetery vote in Chicago. Yeah, that helped. But before Mayor Daley's ghostly legions could carry JFK to victory, it was first necessary to get him even with Nixon. All the ballot stuffing in Chicago would have been unavailing if Kennedy had not been able to steal the electoral votes of the Deep South.
The Democrats knew that there was no way that John F. Kennedy could carry the Deep South in 1960 even with Lyndon Johnson as his running-mate. They also knew that Kennedy could not win unless he did. It was decided, therefore, that JFK would not be on the presidential ballot in Alabama, Georgia and Mississippi. Instead, the state Democratic committees "seceded" from the National Party by prior connivance and with its blessing, and nominated former Klansmen Senators Harry Byrd and Richard Russell as the Democratic standard-bearers in those states. The Democrats were thus about to carry Alabama, Georgia and Mississippi. The electors for Senator Byrd chosen in those states cast their votes instead for Kennedy at the Electoral College. That's how Kennedy was elected president (with a little assist from Mayor Daley).
No breach of democracy ever committed anywhere in the world at any time in history can match in creativity or sheer gall the monumental fraud that was the U.S. election of 1960.
For Cubans in particular that election would have catastrophic consequences which are still being felt today.
The electoral sleight of hand used to secure the Democratic nomination for Obama, despite the fact that Hillary Clinton received a plurality of the popular vote and delegates, does not bode well for the future of Cuba, either.
Although I do not believe that a Socialist can be elected president of the United States, it is not by any means reassuring to have one as the anointed candidate of the Democratic Party.