Ontario Conservative MP Larry Brock is resigning his seat effective September 18, 2026, to return to his former career as a prosecutor at the Crown attorney’s office in Brantford. The departure triggers a byelection in the riding of Brantford-Brant South-Six Nations.
The political landscape in southwestern Ontario is shifting as a prominent Conservative voice prepares to leave federal politics. His exit marks a notable pivot back to the legal arena after serving on Parliament Hill since 2021.
Return to the Courtroom and the Front Lines of Justice
Before entering federal politics, Brock spent nearly 19 years working as a prosecutor. That prosecutorial background defined much of his tenure in Parliament, where he emerged as a vocal critic of Liberal justice policies. His upcoming departure will see him resume that exact line of work in his home community.
The decision to leave ici.radio-canada.ca notes was shared directly with constituents through social media statements. He has accepted a position at the Brantford Crown Attorney’s office.
A Legislative Record Marked by Bail Reform Debates
During his time in Ottawa, Brock served as the Conservative justice critic, a role where he pressed the federal government for stricter legislative controls on repeat offenders. Earlier this summer, Conservative Leader Pierre Poilievre shuffled Brock out of that specific critic portfolio, though the MP remained a central figure in the party’s messaging on public safety.
Throughout his term, Brock consistently argued that existing federal crime measures fell short of public expectations. In September 2025, he publicly pushed for the federal government to adopt the provisions of the jail not bail act
, an opposition-proposed package designed to restrict bail eligibility for individuals charged with violent offences within a 10-year window.
“given my commitment to reforming the criminal justice system, holding criminals accountable and restoring trust and confidence in our legal system.”
Larry Brock, MP for Brantford-Brant South-Six Nations, via Globalnews
Poilievre and Conservative Leadership React
Party leadership acknowledged the departure with public praise for Brock’s legislative efforts. Conservative Leader Pierre Poilievre took to social media to thank the departing member for his advocacy.
“fighting to end liberal bail reform, for putting criminals behind bars, for restoring safety to our streets, and for supporting victims.”
Pierre Poilievre, Conservative Leader, via Globalnews
Triggering a Southwestern Ontario By-Election
Brock’s resignation on September 18, 2026, officially creates a parliamentary vacancy and triggers a byelection in Brantford-Brant South-Six Nations. The seat has stayed under Conservative control since 2008, when Phil McColeman unseated Liberal incumbent Lloyd St. Amand. McColeman later held the seat until Brock secured it in the 2021 election.
Despite leaving his post, Brock expressed full confidence in the local party infrastructure to retain the seat in the upcoming contest.
Unresolved Political Dynamics in the Riding
With the resignation date set for mid-September, attention turns to how quickly the federal government will schedule the ensuing byelection and which candidates will step forward to contest the long-held Conservative stronghold. Neither federal officials nor party organizers have yet announced a timeline for the vote that will determine Brock’s successor in Parliament.
