Michael Ma, the MP for Markham–Unionville, defected from the Conservative Party to Mark Carney's governing Liberal Party, leaving the Liberals two seats short of a parliamentary majority in the 343-seat House of Commons.This move marks the second Conservative defection in a month, significantly weakening Pierre Poilievre and his party as he faces a leadership review scheduled for January.Ma’s decision came on Thursday after a meeting with Carney and follows a similar cross-party switch by
Chris d'Entremont in November, amid ongoing budget deliberations.