The one major exception occurred during the prime ministership of Pierre Elliott Trudeau, Justin Trudeau’s father. In 1980, the elder Trudeau was returned to office after a brief spell in opposition.

Mark Carney has run two central banks and championed the green transition. Now he wants to lead Canada’s Liberal Party.

After 15 years as Prime Minister, he is stepping down…here is a look back on Justin Trudeau’s long involvement with cannabis.