OTTAWA — Pierre Poilievre was defiant on Thursday in the face of questions about his leadership of the Conservative party after a fourth member of his caucus defected to the Liberals this week. He ...

A Toronto-area Conservative MP has crossed the floor to join the governing Liberals. This move strengthens Prime Minister Mark Carney’s minority government and delivers a setback to the Conservative ...

Longtime Conservative MP Marilyn Gladu is crossing the floor to the Liberals. The Liberals announced Gladu is joining their ranks in a statement Wednesday morning. Gladu is the fifth MP to join the ...