The Liberals head into the holidays just one seat shy of a majority after another Conservative MP crossed the floor. Deputy Leader Melissa Lantsman joins The House to discuss whether Pierre Poilievre's leadership is under threat following Markham—Unionville MP Michael Ma’s defection. And, as some provinces flirt with giving the private sector a greater role in health care, will the federal government push back? Federal Health Minister Marjorie Michel weighs in. Also on the show, a new federal