Ontario MP Marilyn Gladu Joins Liberals, Edges Party Closer to Majority
April 8, 2026
Gladu emphasizes delivering local and national projects and prosperity for her communities amid tough economic conditions.
Gladu cited constituents’ desire for serious leadership and a real plan, aiming to help build a stronger, more independent economy through cross-party collaboration.
Gladu has a history of controversial positions on COVID-19, abortion, and drug policy, including past criticisms that drew attention and later clarifications; she previously ran for Conservative leadership in 2020.
The defections are framed within broader national political dynamics and leadership changes under Poilievre and Carney as the Liberals seek to consolidate power.
Gladu’s defection leaves the Liberals with 171 of 338 seats, one short of a formal majority, with the by-elections strategically positioned to potentially deliver it.
Carney welcomed Gladu, highlighting her engineering and international business background as assets for jobs, supply chains, and competitiveness, and described her as bridging parties toward a stronger economy.
Ontario MP Marilyn Gladu has left the Conservative caucus to join Prime Minister Carney’s Liberal government, a move that could push the Liberals toward a majority in the House of Commons.
Three by-elections are slated for April 13 in Scarborough Southwest, University—Rosedale, and Terrebonne, districts viewed as either safe Liberal seats or toss-ups that could deliver the needed seat in a Liberal majority.
She stresses securing direct federal support for her communities during the current economic moment.
Gladu’s crossing was announced with simultaneous statements from both Gladu and Carney, signaling a strategic realignment on the political landscape.
Carney described Gladu as someone who can bridge parties and contribute to a more independent Canadian economy through practical leadership.
The report includes contemporary political context and a photo attribution, anchoring the development in the current news cycle.
Summary based on 18 sources
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Sources

AP News • Apr 8, 2026
Another Canadian Conservative defects to Carney's party | AP News
Global News • Apr 8, 2026
Ex-Conservative MP Marilyn Gladu crosses floor to Liberals
Yahoo News Canada • Apr 8, 2026
Conservative MP Marilyn Gladu crosses floor to Liberals
The Washington Post • Apr 8, 2026
Canadian Prime Minister Mark Carney attracts yet another Conservative lawmaker to his Liberal Party