Why is Mark Carney attracting so many floor-crossers?

Once again, Prime Minister Mark Carney has convinced a Conservative to cross the floor and join his Liberal Party — the third MP to do so in just a few months. And it comes as Conservative Leader Pierre Poilievre tries to manage the fallout from a caucus member’s trip to Washington. The National Post's Stuart Thomson and the Globe and Mail's Shannon Proudfoot take a look at Poilievre’s mounting challenges and how close the Liberals may be to a majority.Plus, the U.S Supreme Court ruled this week that Donald Trump exceeded his authority by imposing sweeping emergency tariffs on trading partners, but the president says he won't back down. Brian Clow, former deputy chief of staff to Prime Minister Justin Trudeau, joins Catherine Cullen to discuss whether the ruling will help — or hurt — Canada.Next, the government announced its long-awaited defence industrial strategy this week, with ambitious goals to boost exports, create 125,000 jobs and award 70 per cent of defence contracts to Canadian companies. But will it mean Canadian troops get the equipment they need? The House visits a local Ottawa defence tech company for their take; CBC’s senior defence writer Murray Brewster breaks down the government’s plans; and Secretary of State for Defence Procurement Stephen Fuhr discusses the road ahead.And New Democrats are entering the final stretch of their federal leadership race as five contenders took the stage in B.C. Thursday for one last candidates’ debate. Former NDP MPs Nathan Cullen and Matthew Green join The House to weigh in on their pitches, the tensions and the contrasting visions for a party hoping to build back after winning just seven seats in the last election.This episode features the voices of:Brian Clow, former deputy chief of staff to Prime Minister Justin TrudeauStuart Thomson, parliamentary bureau chief for the National PostShannon Proudfoot, feature writer for The Globe and MailMicah Grinstead, senior director of operations at CalianChris Pogue, president of defence and space at CalianMurray Brewster, CBC News’ senior defence correspondentStephen Fuhr, secretary of state for defence procurementNathan Cullen, former NDP MPMatthew Green, former NDP MP