The Political RecordFederal electoral districtsNo. 35059Ontario

Middlesex—London

Middlesex—London is a federal riding in Ontario. Lianne Rood (Conservative, first elected to the House in 2019) represents Middlesex—London. Lianne Rood (Conservative) held Middlesex—London for the Conservatives in the 2025 election by 6,693 votes (9.6 points), with 51.7% of the vote. Kent Keenan (Liberal) was second with 42.1%, on a turnout of 73.7% of 95,239 electors. Member as of 2026-11-01.

Fig. 1 — Middlesex—London on the board, 2023 boundaries; the ridings next door as the House holds them on 2026-11-01. Open it on the board →

Who represents Middlesex—London

Lianne Rood's piece from the board. Illustration after the official portrait © House of Commons.

Lianne Rood

Member of Parliament for Middlesex—London

Conservative

MP since 2019-10-21 · 3 terms

Foreign Affairs and International Development committee

70 speeches in the 45th Parliament, most often on Budget 2025 Implementation Act, No. 1.

Contact and office · House of Commons →

The 2025 result: Conservative hold

Share of the valid votes by candidate, Middlesex—London, April 28, 2025

Shares of the 69,847 valid votes; a candidate under 1% is counted with the others. Source: Elections Canada, official voting results, the 2025 general election.

The figures

Candidate	Party	Votes	Share
Lianne Rood	Conservative	36,093	51.7%
Kent Keenan	Liberal	29,400	42.1%
Taylor McIntosh	New Democratic	2,888	4.1%
Jim Johnston	Green	698	1.0%
Others (2)		768	1.1%

Lianne Rood (Conservative) won Middlesex—London on April 28, 2025 with 36,093 votes, 51.7% of the 69,847 valid votes. Kent Keenan (Liberal) was second with 29,400 (42.1%), 6,693 votes and 9.6 points behind.

Of the 69,847 valid votes, Lianne Rood (Conservative) took 51.7%, Kent Keenan (Liberal) 42.1%, Taylor McIntosh (New Democratic) 4.1% and Jim Johnston (Green) 1.0%; the 2 other candidates took 1.1% together. Turnout was 73.7% of 95,239 electors: 70,199 ballots cast, 69,847 of them valid, for 6 candidates.

Since 2021

Against the 2021 result on these boundaries, the Conservatives are up 6.8 (44.9% to 51.7%), the Liberals up 15.1 (27.0% to 42.1%), the New Democrats down 13.6 (17.7% to 4.1%) and the Greens down 0.8 (1.8% to 1.0%), in points of the valid votes.

2021 is Elections Canada's transposition of that election onto the 2023 boundaries, not an election held on these lines.

Since 2004: usually Conservative

The party first in Middlesex—London at each general election, 2004 to 2025, on today's boundaries

2004Liberal40.1%by 3.4 points over the Conservatives
2006changed handsConservative41.9%by 9.0 points over the Liberals
2008Conservative46.0%by 17.6 points over the Liberals
2011Conservative52.2%by 27.7 points over the New Democrats
2015Conservative44.8%by 9.6 points over the Liberals
2019Conservative42.1%by 12.1 points over the Liberals
2021Conservative44.9%by 18.0 points over the Liberals
2025Conservative51.7%by 9.6 points over the Liberals

Each election carried onto today's boundaries by where the riding's 2025 electors lived: our estimate to 2019, Elections Canada's transposition for 2021, the official result for 2025. Parties are counted as they ran.

The figures

Year	First	Share	Second	Margin (pts)	Basis
2004	Liberal	40.1%	Conservative	3.4	carried, our estimate
2006	Conservative	41.9%	Liberal	9.0	carried, our estimate
2008	Conservative	46.0%	Liberal	17.6	carried, our estimate
2011	Conservative	52.2%	New Democratic	27.7	carried, our estimate
2015	Conservative	44.8%	Liberal	9.6	carried, our estimate
2019	Conservative	42.1%	Liberal	12.1	carried, our estimate
2021	Conservative	44.9%	Liberal	18.0	transposed by Elections Canada
2025	Conservative	51.7%	Liberal	9.6	official result

The Conservatives were first here at seven of the eight general elections from 2004 to 2025; the Liberals were first in 2004. In 2025 the Conservatives took 51.7% of the vote here, 7.6 points above their average of 44.1% at the seven general elections from 2004 to 2021.

On today's boundaries the Liberals were first here in 2004 (40.1%) and the Conservatives in 2006 (41.9%), 2008 (46.0%), 2011 (52.2%), 2015 (44.8%), 2019 (42.1%), 2021 (44.9%) and 2025 (51.7%), each with the share of the valid votes shown.

A stronghold is a party first at every general election since 2004, by an average of 20 points or more over the next party; held, first at every one; usually, first at all but one. By-elections are not counted. By this rule 83 of the 343 ridings are usually one party's. The results before 2021 are carried onto today's boundaries by where the riding's 2025 electors lived: our estimate, from the older boundaries of Taylor, Lucas, Kirby and Hewitt and the results in Sevi's "Who Runs?". 2021 is Elections Canada's transposition, and 2025 the official result.

Before 2025

2021 Conservative · Lianne Rood, by 16,879 votes (27.8 pts)
2019 Conservative · Lianne Rood, by 13,837 votes (23.6 pts)
2015 Conservative · Bev Shipley, by 11,708 votes (20.8 pts)

In Lambton—Kent—Middlesex on the 2013 boundaries, the riding most of the 2025 electors in today's Middlesex—London lived in; Elections Canada's official results.

What kind of place Middlesex—London is

Population: 115,6102021 census
Area: 3,109km²
Density: 37people per km²
Electors: 95,239on the 2025 lists

Share with French as a mother tongue is 0.7% — about 44 percent of the median riding's 1.6%.
highestlowest48th lowest of 343
Median total household income is $102,000 — about 1.2 times the median riding's $84,000.
highestlowest58th highest of 343
Share of households that own their home is 80.3% — a little higher than the median riding's 71.4%.
highestlowest58th highest of 343
Share aged 25-64 with a bachelor's degree or higher is 32.4% — a little higher than the median riding's 28.2%.
highestlowest141st highest of 343
Median age is 41.6 — about the same as the median riding's 41.6.
highestlowest163rd highest of 343
Share who are immigrants is 18.1% — a little higher than the median riding's 17.3%.
highestlowest169th highest of 343

2021 Census on the 2023 boundaries; each rule places this riding among all 343. Density is the census population over the riding's area.

IDid this riding change?

Yes. 59% of the 2025 electors in today's Middlesex—London lived in the old Lambton—Kent—Middlesex; by area, 16% of the riding came from other ridings.

Share of today's electorsFormer riding

58.7%Lambton—Kent—Middlesex 84.0% of the area · 43% of it kept

22.1%London North Centre 0.5% of the area · 26% of it kept

12.6%Elgin—Middlesex—London 14.9% of the area · 12% of it kept

6.1%London West 0.3% of the area · 12% of it kept

0.5%London—Fanshawe 0.3% of the area · 7% of it kept

How this is measured. Electors: the share of the current riding's 2025 ordinary-list electors who lived in each former riding, each 2025 polling division placed in the 2013 riding a point inside it falls in. Area: the share of the current riding's area that came from each former riding, by intersecting the 2013 and 2023 boundary files, and how much of the former riding that part was. Area is land, not population. Elections Canada counts 48 of 343 ridings as entirely unchanged.

IIThe 2025 result

Candidate	Party	Votes	%	2021	±
Lianne Rood	Conservative	36,093	51.7%	44.9%	+6.8
Kent Keenan	Liberal	29,400	42.1%	27.0%	+15.1
Taylor McIntosh	New Democratic	2,888	4.1%	17.7%	−13.6
Jim Johnston	Green	698	1.0%	1.8%	−0.8

2 further candidates, each under 1% of the vote

Cynthia Workman	People's	577	0.8%
Shawn Cartlidge	Other	191	0.3%

The 2021 column is Elections Canada's official transposition of the 2021 result onto these 2023 boundaries. ± is the change in each party's share. It is not "swing": with four or more competitive parties there is no single pair to swing between.

IIIHow close was it, really

Third place vs. the margin

2,888 votes

New Democratic took fewer than the 6,693-vote margin.

Election-day polls won by others

34 of 208

1 poll ended in an exact tie.

Fig. 2 — Each square is one election-day poll: ■ won by the Conservatives (173) · ■ won by another party (34) · ▨ tied (1).

Flip the seatHypothetical

It would have taken 3,347 voters switching from Conservative to Liberal — 4.8% of the 69,847 valid votes, 4.8 points — to change the result. No ballot was cast this way; this only moves votes between the top two.

Voters who switch: 006,694

Conservative36,093

Liberal29,400

Still Conservative by 6,693 votes. Actual margin: 6,693.

IVElection day versus advance

Only 55.4% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.

On election day the Conservatives took 54.6%, the Liberals 38.0%, the New Democrats 4.9%, the Greens 1.2% and the People's Party 1.0%; in advance and special ballots, 48.0%, 47.2%, 3.2%, 0.7% and 0.6%, in that order.

Share of the valid votes by party, election-day polls against advance and special ballots, Middlesex—London, April 28, 2025

Shares of the valid votes cast at election-day polls, and of those cast at advance polls, at mobile polls and by special ballot; the gap is the second less the first, in points. Source: Elections Canada, poll-by-poll results, the 2025 general election.

The figures

Party	Election day	Advance and special	Gap
Conservative	54.6%	48.0%	−6.6
Liberal	38.0%	47.2%	+9.2
New Democratic	4.9%	3.2%	−1.7
Green	1.2%	0.7%	−0.5
People's Party	1.0%	0.6%	−0.4

An association, not a cause. Voters who cast ballots before election day differed from those who turned out on the day. It does not say why. There is no poll-level turnout figure on this page: the elector count on a polling division includes people who voted in advance and were counted elsewhere.

VWhere it is

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Fig. 3 — Middlesex—London and its 9 neighbouring ridings.

Sources and citation

"Middlesex—London — federal riding profile and 2025 results."
The Political Record. https://politicalrecord.ca/riding/middlesex-london/
Accessed 2026-11-10.

Results and transposition: Elections Canada. Boundaries: Elections Canada / Statistics Canada, Open Government Licence – Canada. Census: Statistics Canada 2021 Census. Member: House of Commons.

Figures reconcile to the certified national total of 19,641,663 votes. The member is as the House of Commons listed them on 2026-11-01. Page built 2026-11-10.