Way to just put words in my mouth which I haven't even come close to suggesting. Such good faith behavior. If you don't understand what I've written, or I haven't communicated well, you can simply ask for clarification.

I'm saying it's irrelevant if the effective decision to torpedo their party's own promise was decided upon by collectively, by a conference of their MPs, or dictated by Trudeau himself.

Why would the LPC adopt the policy position (MMP)

They wouldn't, because it hurts them at the polls. They don't care about doing the right thing for Canadians, just that they don't lose seats to the NDP, even if that comes at the cost of losing an election to the conservatives. The main thing keeping them in power isn't good policy, it's scare tactics of a Conservative majority combined with FPTP.

Once again, read their comments on the ER report if you want to know what they truly think of their own voters. They spent pages whining about methodology which wasn't thoroughly explained because its already widely accepted. Pure FUD.

Edit: It just occurred to me that perhaps were not seeing eye to eye because of how this conversation started: "Trudeau lied."

I just wanted to clarify that you understand that when most people say that, they're aware that the policy platform that a party head runs on isn't solely their own personal discretion. Is your argument that Trudeau didn't lie because it was a collective decision? Because that would clarify why you care so much about this whole grassroots distinction.