An e-petition will require 5 citizens/residents and an MP to be created. Once it is approved the petition can start collecting signatures. A minimum of 500 signatures is required to have the petition presented to the House of Commons.
The process is depicted here: https://www.ourcommons.ca/petitions/Documents/poster-e.pdf
Perhaps organization such as Fair Vote Canada can draft the petition and find an MP who will be willing to sponsor it (most likely a Liberal, Green or NDP MP). I will be willing to put my name forward if Fair Vote Canada can’t find 5 citizens to start the petition (but I am sure they can).
Just a thought.
Thanks for jogging my memory. I believe I was one of those 360K Canadians and I was excited about proportional (I believe it was called ranking ballots back then?). Now, the interest in proportional vote may or may not have changed among Canadians after 8 years but it’s worth investigating by organization such as Fairvote Canada.