Which riding will be _____ party's best in the upcoming Canadian election?

[King of Kensington]

Liberals:  Scarborough-Rouge Park

[King of Kensington]

It may seem "lazy" but I stand by Scarborough-Rouge Park for the Liberals (though it could be neighboring Scarb-Guildwood or maybe something like Etobicoke North - but it won't be in Atlantic Canada this time!).

Scarborough-Rouge Park is majority non-Chinese VM (mostly South Asian and Black) and also has a weak federal NDP base. It's demographically very much a "Justin Trudeau" riding.

[King of Kensington]

As to top Conservative, I suppose a look at Buffalo Party and Wildrose results may give a hint in terms of the degree to which individual Conservative ridings in rural Alberta and Saskatchewan are particularly likely to see significant leakage on the right.  But I think backlash against "that damn eastern bastard O'Toole and his carbon tax" will turn out to be pretty minimal on election day so not sure how much the order shifts.