Story perspectives

Marilyn Gladu Defects to Liberals, Boosting Majority Prospects

4/8/2026

Summary

Story summary

Marilyn Gladu, MP for Sarnia-Lambton-Bkejwanong, defected from the Conservative Party to join Prime Minister Mark Carney's Liberal caucus, moving the Liberals closer to a majority.
She cited constituents' demand for "serious leadership" and a stronger economy.
This follows a trend of Conservative MPs leaving for the Liberals and raises concerns.
Conservative Leader Pierre Poilievre criticized the decision, saying Gladu should face voters in a byelection to honor her electoral commitments.

History

Historical Context

The 2015 Canadian federal election, held on October 19, marked a historic shift as Justin Trudeau's Liberal Party won 184 seats, a gain of 148 from the previous election. This victory ended nearly a decade of Conservative governance under Stephen Harper, who resigned following the defeat. The election also saw a significant increase in voter turnout, reaching over 68%, reflecting a demand for change in leadership.

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Story summary

Marilyn Gladu, MP for Sarnia-Lambton-Bkejwanong, defected from the Conservative Party to join Prime Minister Mark Carney's Liberal caucus, moving the Liberals closer to a majority.
She cited constituents' demand for "serious leadership" and a stronger economy.
This follows a trend of Conservative MPs leaving for the Liberals and raises concerns.
Conservative Leader Pierre Poilievre criticized the decision, saying Gladu should face voters in a byelection to honor her electoral commitments.

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