It seems First Nations turnout really bad. Big reason Tories won Desnethe-Missinippi-Churchill River and Kenora and neither was even close. On paper shouldn't be Tory with large First Nation's population and Tories usually get in single digits amongst First Nations. But seems for whatever reason many don't show up, while due to re-alignment Tories now dominate white voters in both unlike in past thus why win it as they show up.
They sometimes vote and when they do the outcomes are quite different. As for why they have only a semi-detached relationship with the Canadian polity, well, is that really such a great shock considering how it has treated them over the decades? The white vote in D-M-CR has been
capable of voting monolithically for the designated party of the Right for ages now, so I don't think we need to bring questionable notions of 'realignment' (in Canada? What value does such a concept have in a place where people change their vote more frequently than they change their bedsheets?) into this.