Following the passage of Bill C-20, An Act to amend the Constitution Act, 1867, The Electoral Boundaries Readjustment Act, and the Canada Elections Act on December 16, 2011, an additional 30 seats were added to the Canadian House of Commons. The boundary changes first proposed for Northumberland—Quinte West would have seen significant changes to the riding. The County of Northumberland, while still composing a majority of the riding, was to not be reflected in the new name. Instead, the new electoral district was to be called Prince Edward-Quinte West. Furthermore, the town of Cobourg, township of Hamilton, and municipality of Port Hope was to be transferred to the new riding of Kawartha Lakes-Port Hope-Cobourg. Under the proposed riding changes, Northumberland County would have been split into two separate ridings. The Federal Electoral Boundaries Commission for Ontario defined the proposed boundaries of Prince Edward-Quinte West as consisting of:
the County of Northumberland, excepting: the Township of Hamilton; the Town of Cobourg; the Municipality of Port Hope.
The proposed boundary changes would also have reduced the overall population of the riding. The current electoral district of Northumberland—Quinte West had a population of 125,261 people whereas the proposed riding of Prince Edward-Quinte West would have had a population of 105,035. The elimination of the word "Northumberland" in the proposed riding was the source of heavy criticism. Critics argue that the division of Northumberland County into two distinct political districts as well as the loss of the county's name in the riding title would have had significant negative impacts on the community. "The proposed changes will have significant negative impacts on the future prosperity of Northumberland County by eliminating the name Northumberland completely from the electoral map," Trent Hills Mayor Hector Macmillan said in an interview with Northumberland Today. Furthermore, Bill Pyatt, CAO of Northumberland County Council, said the proposed boundary changes to area electoral districts "will have significant negative impacts on the future prosperity of Northumberland County." Widespread dissatisfaction with the proposed boundaries caused the online petition 1NORTHUMBERLAND to circulate in an attempt to keep Northumberland in the name and united under one electoral district. As The petition had the support of at least 800 households in the riding, representing about 2,000 people. The petition was submitted to the Federal Electoral Boundaries Commission for Ontario. The Federal Electoral Boundaries Commission for Ontario held a public hearing on November 12, 2012 to receive input on the proposed boundary changes. Member of Parliament for Northumberland—Quinte West, Rick Norlock, Cramahae Township Mayor Marc Coombs, former MPP Lou Rinaldi, and past president of the Northumberland Federation of Agriculture, Paul Burnham all spoke against the commission's proposed boundary changes. Northumberland County Council CAO, Bill Pyatt, presented two alternatives to the commission's boundary proposal. The first alternative would see Northumberland County join the Township of Cavan-Millbrook-North Monaghan and Clarington's Ward 4 to create the riding of "Northumberland-Pine Ridge" with an approximate population of 107,000. The second alternative would see Northumberland and the Townships of Asphodel-Norwood, Otonabee-South Monaghan and Cavan-Millbrook-North Monaghan become the riding of "Northumberland-South Peterborough", with an approximate population 106,000. It was believed that the population figures would be in line with Commission's goal to reduce riding populations. The Commission accepted these criticisms and restored Northumberland County's riding as Northumberland—Pine Ridge, which was later renamed Northumberland—Peterborough South.
Members of Parliament
This riding has elected the following Members of Parliament:
