The Political Record · Federal electoral districts

Middlesex—London

Federal riding · ON · No. 35059 · 2023 representation order
Fig. 1 — Middlesex—London, 2023 boundaries.
Member
Lianne Rood Conservative
2025 result
Conservative hold by 6,693 votes
Turnout
73.7% of 95,239 electors
Population
115,610 2021 census
Area
3,109 km²
Figures as of
2026-09-25
Distinctions · ranked against all 343 ridings
  • Turnout: 73.7% of 95,239 electors voted · 59th of 343 in Canada59th
    Turnout
    73.7% of 95,239 electors voted · 59th of 343 in Canada
  • Length of the ballot: 6 candidates stood · 61st of 343 in Canada61st
    Length of the ballot
    6 candidates stood · 61st of 343 in Canada
  • Area, largest first: 3,109 km² · 109th of 343 in Canada109th
    Area, largest first
    3,109 km² · 109th of 343 in Canada
In brief
  1. Lianne Rood held the seat for the Conservatives by 6,693 votes (+9.6 points).
  2. 16% of today's riding was drawn from other ridings in 2023.
  3. Election-day and advance voters agreed on the winner; 55.4% of votes were cast on the day.
  4. Share with French as a mother tongue is the 48th lowest of 343 ridings.
Illustration after: © House of Commons
Member of Parliament
Lianne Rood
Conservative · first elected 2019-10-21 · 3 terms
  • Member: Foreign Affairs and International Development
66 speeches in the 45th Parliament, most often on Budget 2025 Implementation Act, No. 1.

IDid this riding change?

Yes. 16% of today's Middlesex—London came from ridings other than the old Lambton—Kent—Middlesex.

Share of today's areaFormer riding
84.0%Lambton—Kent—Middlesex 43% of it kept
14.9%Elgin—Middlesex—London 12% of it kept
0.5%London North Centre 26% of it kept
0.3%London West 12% of it kept
0.3%London—Fanshawe 7% of it kept
How this is measured. Share of the current riding's area that came from each former riding, by intersecting the 2013 and 2023 boundary files. It is area, not population. Elections Canada counts 48 of 343 ridings as entirely unchanged.

IIThe 2025 result

Conservative hold
Elected
Lianne Rood
Conservative
36,093
51.7% of valid votes
Margin
6,693
votes · +9.6 pts
Runner-up
Kent Keenan
Liberal
29,400
42.1% of valid votes
Conservative 51.7% · Liberal 42.1% · New Democratic 4.1% · Green 1.0%
Turnout73.7% of 95,239 electors
CandidatePartyVotes%2021±
Lianne RoodConservative36,09351.7%44.9%+6.8
Kent KeenanLiberal29,40042.1%27.0%+15.1
Taylor McIntoshNew Democratic2,8884.1%17.7%−13.6
Jim JohnstonGreen6981.0%1.8%−0.8
2 further candidates, each under 1% of the vote
Cynthia WorkmanPeople's5770.8%
Shawn CartlidgeOther1910.3%
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

Swing needed to flip
4.8 pts
Half the margin: the share that would have had to move from first to second.
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.

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.

Election dayAdvance & specialGap
Conservative54.6%48.0%−6.6
Liberal38.0%47.2%+9.2
New Democratic4.9%3.2%−1.7
Green1.2%0.7%−0.5
People's1.0%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.

VWhat kind of place this is

2021 Census, keyed to the 2023 representation order. Comparisons are against the median riding, not Canada as a whole. Each rule places this riding among all 343.

VIWhere it is

loading basemap…
Fig. 3 — Middlesex—London and its 9 neighbouring ridings.

The card

No. 35059ON · 2025
Middlesex—London
Lianne Rood
Result
Conservative hold by 6,693
Turnout
73.7%
Population
115,610
Area
3,109 km²
Turnout: 73.7% of 95,239 electors voted · 59th of 343 in Canada59thTurnoutLength of the ballot: 6 candidates stood · 61st of 343 in Canada61stLength of the ballotArea, largest first: 3,109 km² · 109th of 343 in Canada109thArea, largest first
One of 343The Political Record

A card exists for every one of the 343 ridings.

Every figure on it is the figure on this page: the 2025 result and margin, turnout, the 2021 census population, the area, and the distinctions ranked against all 343 ridings. The portrait is an illustration after the official House of Commons photograph.

Open a neighbour to collect the next one.