What comes next if Mark Carney wins a majority?

The Liberals may be on the verge of a majority. Our National Affairs Panel — CBC's Rosemary Barton, Ryan Tumilty of the Toronto Star, and Stephanie Levitz of the Globe and Mail — take a close look at the latest floor-crossing from the Conservatives, the potential takeaways from tonight's byelections and what all this says about the fate of Mark Carney's political honeymoon.