Byrne was born to Jerry and Julie Byrne in 1977 in Fenelon Falls, Ontario. Her mother was a teacher, who died in 2010 at the age of 58. Her father is a carpenter who joined the Reform Party in the 1990s to protest the Liberals' long-gun registry. Her sister, Jerra Kosick, is also involved with the Conservative Party of Canada, most recently serving as the chief of staff to Minister Michelle Rempel. Byrne is not married and does not have children.
Byrne became involved in politics at age 16, when she joined the Reform Party. Byrne's father, Jerry, had joined the same party to protest the Liberals' long-gun registry. She eventually became the President of the student Reform Party Club at the University of Ottawa. In a media interview, Byrne cited her concerns over debt reduction and tax cuts and how they were more important to her generation than to her parents' generation: "It's great for them to say don’t cut here or there, but they won't be the ones affected by. They’re in their late 40s and they will probably still benefit from government programs. But Canada looks like a bleak place for me by the time I'm their age." Byrne has been called Prime Minister Harper's "single best political organizer", a dedicated Harper loyalist who believed in the party during its darkest days. She is also known for her tenacity and possesses "a single-minded unwillingness to put up with people screwing around."
Conservative Party
In 2009, she became the Director of Political Operations for the Conservative Party of Canada following the appointment of Doug Finley to the Senate of Canada. Byrne was the deputy national campaign manager in the 2006, 2008, and 2011 federal elections, serving under Doug Finley. Between elections, Byrne served in several roles in the Prime Minister's Office, including advisor to Chief of StaffIan Brodie and Director of Issues Management, and at the headquarters of the Conservative Party of Canada. In the 2011 campaign she was promoted to national campaign manager due to the ill health of Doug Finley. She served as campaign manager of the machine designed and largely still run by Finley, taking the pressure off him to allow his pursuit of cancer treatment. Byrne's responsibilities were overseeing the day-to-day operations of Finley’s campaign, what The Hill Times called "one the most efficient, richest, and iron-disciplined campaign machines in Canadian political history."
Return to Prime Minister's Office
In August 2013, Byrne left her job as the Conservative Director of Political Operations and returned to the Prime Minister's Office as co-Deputy Chief of Staff.
In October 2014 the Conservative Party announced that Byrne would lead the campaign in the 42nd Canadian federal election. Shortly before the election, Byrne was reported to have left the Conservative Party's campaign office in Ottawa and returned to Calgary. The Conservative government lost power to the Liberals, who won a majority of the seats. After the election, a number of Conservatives blamed Byrne for her role in the party's defeat and criticized her management style. Byrne's contract expired after the election.
Ontario Provincial Politics
Byrne served as Doug Ford's principal secretary initially, but then took a 2 year patronage appointment to the Ontario energy board. She has since left this post before the end of its term.
