The Burnaby South federal NDP candidate lives in Toronto
There is a long history of party leaders in Canada being initially elected in by-elections where they do not live. This is nothing new.
Tommy Douglas was elected as the MP from Cowichan at one point.
John A was elected as MP for Victoria
Mulroney was initially elected in Nova Scotia
In 1990 Jean Chretien returned to parliament as leader of the Liberals after he won a by-election in New Brunswick
Stockwell Day was elected Canadian Alliance leader and then ran in a BC riding, not Alberta where he lived
When Joe Clark was elected PC leader again in 2000 he ran in Nova Scotia