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The Political RecordFederal electoral districtsNo. 13009New Brunswick

New Brunswick Southwest

Nouveau-Brunswick-Sud-Ouest

Formerly Saint John—St. Croix; renamed by S.C. 2026, c. 20, s. 88. The 2025 election here was fought under the former name.

New Brunswick Southwest is a federal riding in New Brunswick, renamed from Saint John—St. Croix on . John Williamson (Conservative, first elected to the House in 2011) represents New Brunswick Southwest. John Williamson (Conservative) held Saint John—St. Croix (now New Brunswick Southwest) for the Conservatives in the 2025 election by 5,807 votes (11.6 points), with 53.1% of the vote. Karen Ludwig (Liberal) was second with 41.5%, on a turnout of 74.2% of 68,013 electors. Member as of .

Fredericton—Oromocto · LiberalFundy Royal · ConservativeMiramichi—Grand Lake · ConservativeSaint John—Kennebecasis · LiberalTobique—Mactaquac · ConservativeNew Brunswick Southwest
Fig. 1 — New Brunswick Southwest on the board, 2023 boundaries; the ridings next door as the House holds them on . Open it on the board →

Who represents New Brunswick Southwest

CJohn Williamson
John Williamson's piece from the board. Illustration after the official portrait © House of Commons.

John Williamson

Member of Parliament for New Brunswick Southwest

Conservative

MP since · 4 terms

  • Chair, Public Accounts committee
  • Chair, Subcommittee on Agenda and Procedure
  • Liaison committee
  • Public Accounts committee

36 speeches in the 45th Parliament, most often on The Budget — Financial Statement of Minister of Finance.

Contact and office · House of Commons →

The 2025 result, as Saint John—St. Croix: Conservative hold

Elected
John Williamson
Conservative
26,591
53.1% of valid votes
Margin
5,807
votes · 11.6 pts
Runner-up
Karen Ludwig
Liberal
20,784
41.5% of valid votes

Conservative 53.1% · Liberal 41.5% · New Democratic 3.3% · Green 1.6% · of 50,092 valid votes

Turnout 74.2% of 68,013 electors50,448 ballots cast, 50,092 valid5 candidates

Since 2021CPC +6.4 ptsLPC +13.6 ptsNDP −9.7 ptsGPC −2.4 pts2021 transposed onto the 2023 boundaries by Elections Canada.
Before 2025
  • 2021 Conservative · John Williamson, by 9,559 votes (26.1 pts)
  • 2019 Conservative · John Williamson, by 9,341 votes (23.6 pts)
  • 2015 Liberal · Karen Ludwig, by 2,031 votes (5.3 pts)

In the old New Brunswick Southwest on the 2013 boundaries, the riding most of the 2025 electors in today's New Brunswick Southwest lived in; Elections Canada's official results. The elections from 2004, carried onto today's lines, are below.

Since 2004

Usually Conservative: first here at seven of the eight general elections from 2004 to 2025; the Liberals were first in 2015. In 2025 the Conservatives took 53.1% of the vote here, 6.4 points above their average of 46.7% at the seven general elections from 2004 to 2021.

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.

What kind of place New Brunswick Southwest is

Population
80,1902021 census
Area
11,173km²
Density
7.2people per km²
Electors
68,013on the 2025 lists
Distinctions · ranked against all 343 ridings
  • 2nd-closest race in New Brunswick: Won by 5,807 votes (11.6 pts) · 2nd of 10 in New Brunswick · 128th of 343 in Canada2nd
    2nd-closest race in New Brunswick
    Won by 5,807 votes (11.6 pts) · 2nd of 10 in New Brunswick · 128th of 343 in Canada
  • 3rd-most candidates on the ballot in New Brunswick: 5 candidates stood · 3rd of 10 in New Brunswick · 156th of 343 in Canada3rd
    3rd-most candidates on the ballot in New Brunswick
    5 candidates stood · 3rd of 10 in New Brunswick · 156th of 343 in Canada
  • Share of households that own their home is 83.5% — about 1.2 times the median riding's 71.4%.
    highestlowest29th highest of 343
  • Median age is 47.2 — a little higher than the median riding's 41.6.
    highestlowest47th highest of 343
  • Share who are immigrants is 4.5% — about 26 percent of the median riding's 17.3%.
    highestlowest50th lowest of 343
  • Share aged 25-64 with a bachelor's degree or higher is 17.6% — about 62 percent of the median riding's 28.2%.
    highestlowest66th lowest of 343
  • Median total household income is $74,500 — a little lower than the median riding's $84,000.
    highestlowest92nd lowest of 343
  • Share with French as a mother tongue is 3.6% — about 2.3 times the median riding's 1.6%.
    highestlowest111th 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. 71% of the 2025 electors in today's New Brunswick Southwest lived in the old New Brunswick Southwest; by area, 4% of the riding came from other ridings.

Share of today's electorsFormer riding
70.7%New Brunswick Southwest 95.8% of the area · 87% of it kept
22.9%Saint John—Rothesay 1.7% of the area · 36% of it kept
6.5%Fredericton 2.5% of the area · 16% 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, as Saint John—St. Croix

CandidatePartyVotes%2021±
John WilliamsonConservative26,59153.1%46.7%+6.4
Karen LudwigLiberal20,78441.5%27.9%+13.6
Andrew HillNew Democratic1,6433.3%13.0%−9.7
Gerald IrishGreen7941.6%4.0%−2.4
1 further candidate, under 1% of the vote
Keith TaysOther2800.6%
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
1,643 votes
New Democratic took fewer than the 5,807-vote margin.
Election-day polls won by others
34 of 178
No poll ended in a tie.
Fig. 2 — Each square is one election-day poll: ■ won by the Conservatives (144) · ■ won by another party (34).
Flip the seatHypothetical

It would have taken 2,904 voters switching from Conservative to Liberal — 5.8% of the 50,092 valid votes, 5.8 points — to change the result. No ballot was cast this way; this only moves votes between the top two.

Conservative26,591
Liberal20,784
Still Conservative by 5,807 votes. Actual margin: 5,807.

IVElection day versus advance

Only 52.5% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.

Election dayAdvance & specialGap
Conservative57.7%47.9%−9.8
Liberal35.7%47.9%+12.2
New Democratic3.9%2.6%−1.3
Green2.0%1.1%−0.9
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

loading basemap…
Fig. 3 — New Brunswick Southwest and its 5 neighbouring ridings.

Sources and citation

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 2026-11-03.

"New Brunswick Southwest — federal riding profile and 2025 results." The Political Record. https://politicalrecord.ca/riding/new-brunswick-southwest/ Accessed 2026-11-03.