Some Liberals think Mark Carney could succeed Justin Trudeau. We talked to those who think he’d be a great leader — and others who roll their eyes

OTTAWA—The way former Liberal cabinet minister Catherine McKenna sees it, change is coming. Either her party supplies it, or they lose power.

She’s quick to say that doesn’t necessarily mean Justin Trudeau needs to go, though she observes that what’s on offer “clearly” isn’t resonating with voters.