Another MP leaves Conservatives, crosses floor to Liberals

Politics·Breaking

Ontario MP Michael Ma announced Thursday that he is leaving the Conservative caucus and joining the Liberals.

Ontario MP Michael Ma says he’s joining Liberal caucus

Darren Major · CBC News · Posted: Dec 11, 2025 6:23 PM EST | Last Updated: 2 minutes ago

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Markham-Unionville MP Michael Ma crossed the floor to join the Liberals on Thursday. (mpmichaelma.ca)

Ontario MP Michael Ma announced Thursday that he is leaving the Conservative caucus and joining the Liberals.

The MP said in a statement that he made the decision after listening to his constituents in the riding of Markham-Unionville in the Greater Toronto Area.

“This is a time for unity and decisive action for Canada’s future,” he wrote.

“In that spirit, I have concluded that Prime Minister Mark Carney is offering the steady, practical approach we need to deliver on the priorities I hear every day while door-knocking in Markham-Unionville.”

Ma’s move comes just a few weeks after former Conservative Chris d’Entremont also left the Conservatives to join the government benches.

The new addition to the Liberal caucus means Carney is one seat away from a majority government.

More to come.

ABOUT THE AUTHOR

Darren Major is a senior writer for CBC’s parliamentary bureau in Ottawa. He previously worked as a digital reporter for CBC Ottawa and a producer for CBC’s Power & Politics. He holds a master’s degree in journalism and a bachelor’s degree in public affairs and policy management, both from Carleton University. He also holds master’s degree in arts from Queen’s University. He can be reached at [email protected].

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