Glass Cliff? Proudly Canadian Invention!
The Glass Cliff was invented in Canada!
Way back in 1993, our then Canadian Prime Minister Brian Mulroney saw that he was going to get wiped out for his policy decisions (Good and Services Tax, unbalanced Free Trade Agreement favoring the US, etc), stepped down and let Defence Minister Kim Campbell become P.M. for 2-1/2 months.
The party was voted off the map, going from a 151 seat majority to only 2 seats. Ms. Campbell was soundly defeated. Mulroney was such a jerk he didn't even vacate the Prime Minister's residence, Campbell was the only P.M. to never live in the P.M.'s official residence.