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Amid a major parliamentary shift, the ruling Liberal administration has inched nearer to obtaining a majority government following a Conservative Member of Parliament crossed the aisle, landing another blow to the beleaguered Tories.

A Rookie MP's Unexpected Defection

Rookie lawmaker Michael Ma announced Thursday evening that he had decided to depart from the Conservative party. He pointed to his belief in the pragmatic and stable leadership of Prime Minister Mark Carney's administration, which he argued would better deliver on critical priorities like the cost of living and the economic management.

"After careful consultation to the people of Markham–Unionville in recent weeks and reflecting with my family on the future path of our nation, I have notified the speaker and the leader of the opposition that I will be joining Prime Minister Mark Carney in the government caucus," Ma said. "We are in a time for unity and bold steps for Canada’s future."

The Sequence of the Defection

Notably, Ma delivered his announcement the day after being present at the Conservative Christmas party and being photographed for a picture with Tory leader Pierre Poilievre. He subsequently attended a reception hosted by the Liberals the following night, taking the stage alongside Carney to raucous cheers.

This move means the governing party now have 171 seats in parliament: just one away of a majority.

Conservative Reaction and Wider Implications

In a post on a social platform, Conservative Leader Pierre Poilievre asserted that Ma had "opted to endorse the very agenda he was voted in to fight against." He added, "His constituents he disappointed the most are the ones who chose him to champion an more affordable future. He will have to answer to them."

The crossing is a sting for the Tories, who have now lost three MPs. A previous member crossed to the Liberals in November, and another has indicated he will resign in the coming months.

Possible More Shifts

On Friday, Government House Leader Stephen MacKinnon remarked he thought there were more discontented opposition members who could consider crossing over to the Liberals.

"All of my colleagues here have the same experience of speaking to opposition members, sadly a group which is in the minority in their caucus, who are profoundly displeased with the leadership of their party," he stated during a media briefing. He noted that members were being forced to participate in a "pretence of obstruction" that is a "demoralizing experience for many Conservatives."

Governing Party Challenges Remain

While the addition of a another member to their ranks has buoyed the governing party, PM Mark Carney has also faced internal dissent within his own party.

Just weeks ago, a high-profile senior minister, Steven Guilbeault, stepped down from his cabinet role. His departure was in opposition to Carney's move to support a controversial oil pipeline project from Alberta to the Pacific Ocean.

Guilbeault, a longtime environmental advocate, had warned that the project "could cause major ecological damage ... lead to a substantial increase in greenhouse gas emissions, and set Canada back from its climate targets." He also cautioned that ending the moratorium on oil tanker traffic would dramatically increase the risk of accidents in the region.