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.

In the days since Prime Minister Justin Trudeau announced he'll be stepping down as leader, the list of potential candidates to replace him has considerably thinned. Here's a look at who's declared their intentions,

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