Throughout the summer and into the fall of 2003, talks were undertaken by officials of the Canadian Alliance and Progressive Conservatives with respect to a merger of those parties. Vote-splitting between the two right-wing parties had enabled the Liberals to dominate Canadian politics for a decade. Meetings between the parties were overseen by a facilitator, who was later revealed to have been Stronach. She was among many who had called for PC leader Peter MacKay and Canadian Alliance leader Stephen Harper to undertake the merger talks in the first place.