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Ottawa South — Canadian Federal Election Results

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

Ottawa South was won by Liberal at the 2021 general election, with a margin of 13,541 votes over Conservative. This page covers every general election in Ottawa South from 1988 to 2021.

Full Election History, 1988–2021

Election Winner Party Votes Vote Share Runner-up Margin
1988 Liberal Liberal 27,740 50.8% Progressive Conservative (19,134) 8,606 (15.8 pts)
1993 Liberal Liberal 36,485 65.9% Reform (8,003) 28,482 (51.5 pts)
1997 Liberal Liberal 31,725 59.0% Reform (8,522) 23,203 (43.2 pts)
2000 Liberal Liberal 26,585 51.3% Canadian Alliance (12,677) 13,908 (26.9 pts)
2004 Liberal Liberal 25,956 43.8% Conservative (20,622) 5,334 (9.0 pts)
2006 Liberal Liberal 27,158 44.2% Conservative (23,028) 4,130 (6.7 pts)
2008 Liberal Liberal 29,035 49.9% Conservative (19,417) 9,618 (16.5 pts)
2011 Liberal Liberal 25,963 44.0% Conservative (19,634) 6,329 (10.7 pts)
2015 Liberal Liberal 38,831 60.1% Conservative (15,711) 23,120 (35.8 pts)
2019 Liberal Liberal 34,205 52.4% Conservative (16,025) 18,180 (27.8 pts)
2021 Liberal Liberal 29,038 48.8% Conservative (15,497) 13,541 (22.8 pts)

Full Result Breakdown by Election

1988

PartyVotesShare
Liberal27,74050.8%
Progressive Conservative19,13435.1%
NDP7,39213.5%
Libertarian Party of Canada1460.3%
Party for the Commonwealth of Canada900.2%
Independent740.1%

1993

PartyVotesShare
Liberal36,48565.9%
Reform8,00314.5%
Progressive Conservative6,97112.6%
NDP2,1693.9%
National Party of Canada1,0381.9%
Green3580.6%
Natural Law Party of Canada2510.5%
Marxist-Leninist Party630.1%

1997

PartyVotesShare
Liberal31,72559.0%
Reform8,52215.9%
Progressive Conservative8,11515.1%
NDP4,3748.1%
Green4400.8%
Canadian Action Party2810.5%
Natural Law Party of Canada1670.3%
Marxist-Leninist Party1400.3%

2000

PartyVotesShare
Liberal26,58551.3%
Canadian Alliance12,67724.5%
Progressive Conservative8,09615.6%
NDP3,4636.7%
Marijuana Party6791.3%
Natural Law Party of Canada1410.3%
Marxist-Leninist Party800.2%
Communist690.1%

2004

PartyVotesShare
Liberal25,95643.8%
Conservative20,62234.8%
NDP8,08013.6%
Green3,3985.7%
Marijuana Party4950.8%
Progressive Canadian Party3750.6%
Independent2250.4%
Marxist-Leninist Party790.1%

2006

PartyVotesShare
Liberal27,15844.2%
Conservative23,02837.4%
NDP8,13813.2%
Green2,9134.7%
Progressive Canadian Party2730.4%

2008

PartyVotesShare
Liberal29,03549.9%
Conservative19,41733.4%
NDP4,9208.5%
Green3,9396.8%
Progressive Canadian Party6201.1%
Libertarian Party of Canada2440.4%

2011

PartyVotesShare
Liberal25,96344.0%
Conservative19,63433.3%
NDP10,71218.2%
Green1,7873.0%
Progressive Canadian Party5130.9%
Pirate Party of Canada3820.6%

2015

PartyVotesShare
Liberal38,83160.1%
Conservative15,71124.3%
NDP7,48011.6%
Green1,8882.9%
Progressive Canadian Party3660.6%
Libertarian Party of Canada2370.4%
Communist1360.2%

2019

PartyVotesShare
Liberal34,20552.4%
Conservative16,02524.5%
NDP10,45716.0%
Green3,6455.6%
People's Party7171.1%
Independent1410.2%
Communist990.2%

2021

PartyVotesShare
Liberal29,03848.8%
Conservative15,49726.0%
NDP11,51419.4%
People's Party1,8983.2%
Green1,4012.4%
Communist1440.2%

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.

1988: Liberal margin 15.8 pts 1993: Liberal margin 51.5 pts 1997: Liberal margin 43.2 pts 2000: Liberal margin 26.9 pts 2004: Liberal margin 9.0 pts 2006: Liberal margin 6.7 pts 2008: Liberal margin 16.5 pts 2011: Liberal margin 10.7 pts 2015: Liberal margin 35.8 pts 2019: Liberal margin 27.8 pts 2021: Liberal margin 22.8 pts 1988 1993 1997 2000 2004 2006 2008 2011 2015 2019 2021

Trend

Ottawa South has been contested at 11 general elections on record since 1988. Winning party over that span: Liberal.

Frequently Asked Questions

Who won Ottawa South in the 2021 general election?

Liberal won Ottawa South in 2021 with 29,038 votes (48.8%), a margin of 13,541 votes over Conservative in second place.

Which parties have won Ottawa South since 1988?

Since 1988, Ottawa South has been won by: Liberal.

What was the closest result in Ottawa South?

The closest contested result on record for Ottawa South was 2006, when Liberal beat Conservative by 4,130 votes (6.7 percentage points).

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