A Super-delegate, in the Americanpolitical system, is a delegate, especially to a national Presidential nominating convention, who is endowed with super-powers. Although both the Democratic Party and the Republican Party like to go through the motions of soliciting voter input on who should be the Party's Presidential candidate, actual voters are, to put it mildly, morons. Frequently, the Party must contrive to both thank them for their valued contribution and hit the figurative Revert button.
The hoi polloi tirelessly coalesce around a candidate with inspiring new ideas, be it Bernie Sanders with his untested concept of socialism, or Ron Paul with his assertions that American tourism caused the Middle East to erupt until Jews had to dynamite the World Trade Center during the September 11 attacks. When such candidates gain traction, insiders (the "party-archy") need to turn away from the hoi polloi, consult with other polloi, and pick a candidate who is more electable, electability judged by persons who cannot persuade anyone of any actual idea.
1933 - The Canadian Parliament suspends all Chinese immigration; the dreams of countless Chinese youths of playing hockey for a career are sundered.
1970 - Boston Bruins goaltender Gerry Cheevers is honored on Canada Day as the Canadian of the Year.
1980 - O Canada officially becomes the national anthem of Canada, replacing Canada Is Pretty Neat, Eh?
2020 - The United States invades Canada with the intention of creating the massive new national park "Mooseland". After arriving, however, nothing of any interest was found, and all armed forces were withdrawn from the area.