I decided to do a quick reverse prediction, where rather than taking existing polling numbers and finding the seat total, I adjusted the polling numbers to produce a seat total.
Based on current polls, my understanding of current events, and my read of where the Liberals want to focus in the coming election, this is my 'best educated guess' as to which 170 seats Justin Trudeau has in mind.
edited to add:
I may have grabbed the incorrect map files. I will be doing a further follow-up post to this that does not focus so much on the number 170