At 9:41pm EDT, October 19, 2015, CBC News projected that the Liberals had won at least a minority government, and that leader Justin Trudeau would become the next Prime Minister of Canada. Less than an hour later, at 10:36pm EDT, CBC News projected a Liberal majority. The New Democratic Party lost more than half the seats they had held, with Tom Mulcair becoming the first major party leader to concede defeat. The Conservatives dropped down to 99 seats to form the main opposition party, and Stephen Harper resigned as leader of the Conservative Party. The Bloc Québécois regained some ridings they had lost in the previous election, but party leader Giles Duceppe failed to regain the seat he lost back in 2011. Green Party leader Elizabeth May kept her seat.[1]
According to preliminary figures from Elections Canada, more than 68 per cent of eligible voters cast a ballot, or about 17,546,697 registered electors—a seven percentage point increase from the 2011 federal election, when turnout was just more than 61 per cent.[2]
^The party totals are theoretical. They are the transposition of the 2011 district results redistributed to the new districts formed in 2015.
^Includes Liberal candidate Cheryl Thomas from Victoria, who publicly withdrew from the election after the final list of candidates was released and thus remained on the ballot as the Liberal candidate.
^Includes Conservative candidate Jagdish Grewal from Mississauga—Malton, who was expelled by the Conservative Party after the final list of candidates was released and thus remained on the ballot as the Conservative candidate.
^ abDoes not include José Núñez-Melo, an incumbent MP who was denied the NDP nomination in Vimy after the writ was dropped, and subsequently announced he was running as a Green candidate.
^Does not include Montcalm MP Manon Perreault, who sat as an independent before the writ was dropped, after which she announced her candidacy for Strength in Democracy.
The election was notable for seeing voter turnout rise across all ages and sexes, and especially significant for the rise in younger voters. In particular, there was an increase of 1.2 million voters among those under the age of 35.[5]
Voter turnout by age and sex, %, 2015 vs 2011[6][7]
In the previous election, the Liberals were cut down to 34 seats, the fewest they had ever won in their history. It was the first time since the nation's founding that the Liberals had not been either in government or the Official Opposition. They picked up one additional seat in a by-election and one via a floor-crossing.
While the Liberals had been expected to regain much of what they had lost in 2015, they tallied the second-best performance in their history; the 184 seats was bettered only by the 193 they won in 1949. It was also the most seats that a party had won since the Progressive Conservatives won a record 211 in 1984.
The Liberal victory came mainly on the strength of a solid performance in the eastern part of the country. They took every seat in Atlantic Canada, and also swept Toronto. They also won all but one seat in Ottawa. Most notably, they won 40 of Quebec's 78 seats, mostly on the strength of taking all but five seats in Montreal. It was the first time since 1980 that the Liberals had won the most seats in Quebec.
After going into the election with only four seats west of Ontario, the Liberals had their best showing in Western Canada in more than two decades. They not only took all but one seat in Winnipeg and all but two seats in Vancouver, but won seats in Alberta for the first time since 2004. Notably, they won two seats in Calgary; they had won only three seats there in their entire history prior to 2015. They were the only party to win seats in every province.
The Conservatives lost 60 seats to become the Official Opposition. They held their own in their heartlands of rural western Canada and central Ontario, and managed a respectable showing in southwestern Ontario and the more rural areas of eastern Ontario. However, they suffered heavy losses in urban southern Ontario, a region which had swung heavily to them in 2011. They lost all of their seats in Toronto itself and all but three in the 905 region. They also lost all of their seats in Winnipeg and Vancouver, as well as Atlantic Canada. It will be the first time in decades that there will be no centre-right MPs east of Quebec. They did, however, manage to make some gains in francophone areas of Quebec, mostly at the expense of the NDP.
The NDP, the Official Opposition in the previous parliament, fell to third place with 44 seats, losing more than half of their caucus. For the most part, their support bled over to the Liberals, though they lost a few areas of francophone Quebec to the Conservatives and Bloc.
The Bloc made a modest recovery after being nearly decimated in 2011, rebounding to 10 seats. However, Gilles Duceppe, who had been the longest-serving party leader in Canada at the time of his defeat in 2011, failed to win back his old seat of Laurier—Sainte-Marie. The party also received a smaller share of the popular vote than in the last election. As such, their gains could be attributable to NDP-Liberal vote splitting in francophone ridings more than a surge in popular support.
The parties had varying degrees of success by region and by socioeconomic factors. An analysis by The Globe and Mail shortly after the election was held revealed significant differences:[8]
Party support arising from certain key factors by region in the Canadian general election (2015), as a proportion of the ridings won
As a result of the 2012 federal electoral redistribution, thirty new ridings were added and many riding boundaries were changed, so several incumbent MPs who ran chose to do so in new ridings. The following table identifies the subsequent nominees in their old ridings and who they lost to.
Electoral District, with 2011 redistributed result
As a result of the 2012 federal electoral redistribution, thirty new ridings were added and many riding boundaries were changed, so several ridings did not have an Incumbent. The following table identifies what party would have held the redistributed ridings based on 2011 results for the new riding and the subsequent MP who was elected. Some of these seats did have incumbents from other districts running.