Mark Carney Inches Toward Parliamentary Majority Following High-Profile Defection of Conservative MP Marilyn Gladu

Prime Minister Mark Carney nears a Liberal majority in Canada after Conservative MP Marilyn Gladu crosses the floor, sparking a row over democratic backroom deals.

By: AXL Media

Published: Apr 10, 2026, 5:55 AM EDT

Source: Information for this report was sourced from BBC News

A Strategic Shift Toward Liberal Majority Power

The Canadian political landscape has undergone a significant realignment this week as Marilyn Gladu, the Member of Parliament for Sarnia-Lambton-Bkejwanong, officially joined the Liberal Party. This defection serves as a pivotal moment for Prime Minister Mark Carney, whose government now sits on the precipice of a formal majority. With 171 seats currently held by the Liberals, the party requires only one additional seat to reach the 172-seat threshold necessary for total legislative control. Gladu justified her departure by citing a need for "serious leadership" and a focus on building a more independent national economy in a period of global uncertainty.

The Rising Friction of Floor Crossing Politics

Conservative leader Pierre Poilievre has responded to the news with sharp condemnation, characterizing the defection as the result of "dirty backroom deals." Poilievre has called for legislative reform that would force any MP who switches parties to face a by-election, arguing that constituents should have the final say when a representative abandons the platform they were elected on. He asserted that Gladu’s move effectively tells voters their initial ballots do not count, particularly in a riding where a strong majority previously supported the Conservative vision.

A Pattern of Defections Under the Carney Administration

Gladu is the fifth Member of Parliament to defect to the Liberals in recent months, highlighting a period of intense volatility within the opposition benches. Her move follows the high-profile departure of Lori Idlout, who left the New Democratic Party to represent Nunavut under the Liberal banner. Additionally, the Conservatives have seen three other Ontario, Alberta, and Nova Scotia MPs, Michael Ma, Matt Jeneroux, and Chris d'Entremont, cross the floor. Prime Minister Carney has welcomed these additions as "practical, results-driven leadership" necessary for navigating current economic challenges.