A pollster suggests it is 'not insurmountable' for the Liberal party to win Conservative MP Larry Brock's seat in an upcoming by-election, despite Brock's 11-percentage-point victory in the previous federal election.

Sources indicate that Ontario Conservative Member of Parliament Larry Brock is expected to resign from his position at the end of the summer.

Conservative MP Larry Brock is set to resign next month, which will trigger an eighth federal by-election by mid-April.

Conservative MP Larry Brock, representing Brantford—Brant South—Six Nations in Ontario, announced his resignation from Parliament next month, citing an opportunity at the Brantford Crown Attorney's office.