I hate this mentality of bucketing Liberals and NDP together. They're different parties with different policies, and one of the main benefits of PR is that leftists don't have to compromise our values and vote Liberal just to prevent Conservatives from winning. Treating it like left vs right just pushes us towards the Democrat vs Republican in the US.
That's probably true for NDP voters (i.e. they'd rather have a Liberal government than CPC), but I don't think it's true that Liberal voters would rather have NDP than Conservative.
We're both just speculating though, there's probably some actual info on this from people studying ranked ballots
Easy. He just has to open the constitution to make those reforms. Nothing bad ever happens when we try to change the constitution. All the provinces always agree and there is definitely no lingering constitutional issues that we haven't been able to resolve in more than four decades.
He shouldn't have made that promise. He should have been aware that electoral reforms would need to change the constitution and that every time we try do that, the country nearly implodes. So we just keep status quo until the constitutional crisis will be big enough that we can't ignore it anymore. I don't know what he was thinking. Maybe he thought we would all forget about it.