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Oshawa — Canadian Federal Election Results

Compiled by EveryElectionResult.com's data team · Last updated 2026-08-30

Oshawa was won by Conservative at the 2021 general election, with a margin of 6,330 votes over NDP. This page covers every general election in Oshawa from 1979 to 2021.

Full Election History, 1979–2021

Election Winner Party Votes Vote Share Runner-up Margin
1979 NDP NDP 29,090 51.3% Progressive Conservative (18,369) 10,721 (18.9 pts)
1980 NDP NDP 26,761 51.6% Progressive Conservative (14,645) 12,116 (23.4 pts)
1984 NDP NDP 25,092 42.3% Progressive Conservative (23,028) 2,064 (3.5 pts)
1988 NDP NDP 18,410 44.3% Progressive Conservative (14,040) 4,370 (10.5 pts)
1993 Liberal Liberal 15,651 38.3% Reform (11,826) 3,825 (9.4 pts)
1997 Liberal Liberal 15,925 37.7% Reform (11,974) 3,951 (9.4 pts)
2000 Liberal Liberal 16,179 42.9% Canadian Alliance (10,863) 5,316 (14.1 pts)
2004 Conservative Conservative 15,815 33.2% NDP (15,352) 463 (1.0 pts)
2006 Conservative Conservative 20,657 38.6% NDP (17,905) 2,752 (5.1 pts)
2008 Conservative Conservative 19,951 41.4% NDP (16,750) 3,201 (6.6 pts)
2011 Conservative Conservative 26,034 51.3% NDP (19,212) 6,822 (13.4 pts)
2015 Elected by acclamation (Conservative) — no opposing candidate, no vote count on record
2019 Conservative Conservative 24,087 38.9% NDP (17,668) 6,419 (10.4 pts)
2021 Conservative Conservative 22,409 39.7% NDP (16,079) 6,330 (11.2 pts)

Full Result Breakdown by Election

1979

PartyVotesShare
NDP29,09051.3%
Progressive Conservative18,36932.4%
Liberal9,09916.0%
Communist800.1%
Marxist-Leninist Party620.1%
Independent470.1%

1980

PartyVotesShare
NDP26,76151.6%
Progressive Conservative14,64528.3%
Liberal10,12919.5%
Libertarian Party of Canada1780.3%
Communist810.2%
Marxist-Leninist Party290.1%

1984

PartyVotesShare
NDP25,09242.3%
Progressive Conservative23,02838.8%
Liberal10,71918.1%
Libertarian Party of Canada3350.6%
Party for the Commonwealth of Canada740.1%
Communist720.1%

1988

PartyVotesShare
NDP18,41044.3%
Progressive Conservative14,04033.8%
Liberal8,49620.5%
Libertarian Party of Canada4491.1%
Party for the Commonwealth of Canada1390.3%

1993

PartyVotesShare
Liberal15,65138.3%
Reform11,82628.9%
Progressive Conservative6,14015.0%
NDP6,10214.9%
National Party of Canada3911.0%
Christian Heritage Party of Canada3860.9%
Natural Law Party of Canada2630.6%
Party for the Commonwealth of Canada740.2%
Abolitionist Party of Canada600.1%

1997

PartyVotesShare
Liberal15,92537.7%
Reform11,97428.4%
NDP7,35017.4%
Progressive Conservative6,97216.5%

2000

PartyVotesShare
Liberal16,17942.9%
Canadian Alliance10,86328.8%
Progressive Conservative5,67515.1%
NDP4,20311.1%
Marijuana Party6791.8%
Marxist-Leninist Party970.3%

2004

PartyVotesShare
Conservative15,81533.2%
NDP15,35232.2%
Liberal14,51030.5%
Green1,8503.9%
Marxist-Leninist Party910.2%

2006

PartyVotesShare
Conservative20,65738.6%
NDP17,90533.5%
Liberal12,83124.0%
Green2,0193.8%
Marxist-Leninist Party910.2%

2008

PartyVotesShare
Conservative19,95141.4%
NDP16,75034.7%
Liberal7,74116.0%
Green3,3747.0%
Christian Heritage Party of Canada2460.5%
Marxist-Leninist Party1170.2%
Canadian Action Party520.1%

2011

PartyVotesShare
Conservative26,03451.3%
NDP19,21237.9%
Liberal3,5367.0%
Green1,6313.2%
Libertarian Party of Canada2600.5%
Marxist-Leninist Party610.1%

2019

PartyVotesShare
Conservative24,08738.9%
NDP17,66828.5%
Liberal15,75025.4%
Green3,1515.1%
People's Party1,2152.0%
Communist1120.2%

2021

PartyVotesShare
Conservative22,40939.7%
NDP16,07928.5%
Liberal13,04423.1%
People's Party4,0297.1%
Green8641.5%

Margin Over Time

Winning margin (percentage points) at each contested election, coloured by the winning party. Acclaimed elections (no opposing candidate) aren't plotted since there's no margin to measure.

1979: NDP margin 18.9 pts 1980: NDP margin 23.4 pts 1984: NDP margin 3.5 pts 1988: NDP margin 10.5 pts 1993: Liberal margin 9.4 pts 1997: Liberal margin 9.4 pts 2000: Liberal margin 14.1 pts 2004: Conservative margin 1.0 pts 2006: Conservative margin 5.1 pts 2008: Conservative margin 6.6 pts 2011: Conservative margin 13.4 pts 2019: Conservative margin 10.4 pts 2021: Conservative margin 11.2 pts 1979 1980 1984 1988 1993 1997 2000 2004 2006 2008 2011 2019 2021

Trend

Oshawa has been contested at 14 general elections on record since 1979. Winning parties over that span: NDP, Liberal, Conservative.

Frequently Asked Questions

Who won Oshawa in the 2021 general election?

Conservative won Oshawa in 2021 with 22,409 votes (39.7%), a margin of 6,330 votes over NDP in second place.

Which parties have won Oshawa since 1979?

Since 1979, Oshawa has been won by: Conservative, Liberal, NDP.

What was the closest result in Oshawa?

The closest contested result on record for Oshawa was 2004, when Conservative beat NDP by 463 votes (1.0 percentage points).

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