Constituency profile

West Dunbartonshire

Scotland · County constituency · West Dunbartonshire borough

Douglas McAllister MP
Sitting MP

Douglas McAllister

Labour

First elected July 2024

Current PollCheck projection

Region & type
Scotland
County constituency, West Dunbartonshire council
Last 5 GE winners
LSSSL
SNP 3/5, Labour 2/5
EU referendum 2016
38.0% Leave
UK average 51.9%; -13.9pp below mean
Current outlook
SNP +0.0pp
Vulnerability score 8/10 (Labour projected to lose)
ScottishRemain-leaning

About the West Dunbartonshire constituency

West Dunbartonshire is a county constituency in Scotland. The sitting MP is Douglas McAllister (Labour), first elected in July 2024. At the 2024 general election, Labour won with 48.8% to 33.6% for the SNP, a majority of 6,010 votes on a 57.3% turnout. PollCheck's current projection, at the seven-poll average, has the SNP on 35.4% and Labour on 35.4%, a margin of 0.0 points - a projected change of hands from Labour.

Who lives in West Dunbartonshire? Constituency demographics

From the 2021 Census and 2016 EU referendum estimates. Constituency-level data on 2024 boundaries.

Leave vote 2016
38.0%
UK average ~52%
Degree or above
37.6%
UK average ~34%
No qualifications
21.3%
UK average ~18%
Owner-occupied
57.4%
UK average ~63%
Renting (social + private)
41.6%
UK average ~36%
Median age
44.3
UK median ~40
Age 65+
23.9%
UK average ~19%
Age 18-34
27.1%
UK average ~28%

How did West Dunbartonshire vote in 2024 and how would it vote now?

2024 vote shares from the HoC Library. Current projection is at the 7-poll average.

2024 general election

Lab gain from SNP · majority 6,010 votes (15.2pp) · turnout 57.3%

Current projection

If a general election were held today, at current poll average

Map of West Dunbartonshire

Switch between GE2024 ward winners (modelled estimates, ~4pp average error) and a demographic view from Scotland's 2022 Census. Hover any area for detail. How the map is built ›

Holyrood 2026 layer

How West Dunbartonshire voted at the Scottish Parliament election (7 May 2026)

West Dunbartonshire crosses multiple Holyrood boundaries: Dumbarton (76%), Clydebank and Milngavie (21%), Stirling (2%). Scotland uses the Additional Member System: voters cast one ballot for a constituency MSP and a second for a regional list. The figures below are the constituency vote.

Holyrood constituencyShare of West DunbartonshireWinnerRunner-upElected MSP
Dumbarton76%Labour 39.8%SNP 34.2%Jackie Baillie
Clydebank and Milngavie21%SNP 38.6%Labour 25.2%Marie McNair
Stirling2%SNP 42.4%Conservative 19.2%Alyn Smith

Holyrood 2026 constituency results from official declarations. Overlap percentages are area-based using the post-2024 Westminster boundary against the new Holyrood second-review boundary (in force from 7 May 2026).

Council layer (not Westminster)

West Dunbartonshire within West Dunbartonshire

West Dunbartonshire sits entirely within West Dunbartonshire Council. West Dunbartonshire was not due to vote in 2026, so the figures below are the most recent ward results available. About this layer ›

Council overlap

CouncilShare of seat
West Dunbartonshire
1 LSOAs
100%

Recent council by-elections

Council ward by-elections held inside this seat, most recent first. The result column shows which party won; the share column shows the top three parties’ vote shares on the day.

DateWardResultTop 3 vote shares
15 May 2025Clydebank Waterfront
West Dunbartonshire
SNP HOLDLab 36% Ref 26% Con 25%
29 Nov 2024Kilpatrick
West Dunbartonshire
Lab HOLD
14 Jun 2024Clydebank Central
West Dunbartonshire
Lab GAIN from Ind

Most recent council ward results

Latest council winner per ward - May 2026 results where the council voted, otherwise the most recent available result. How this table is sourced ›

Ward GE2024 winner Latest council winner Shift since GE2024 Turnout
Clydebank CentralLabour 46.1%vs SNP 40.7%2022 SNP 52.4%vs Labour 39.7%-13.1%
Clydebank WaterfrontLabour 56.2%vs SNP 28.5%2022 SNP 52.3%vs Labour 37.4%-15.5%
DumbartonLabour 50.5%vs SNP 35.5%2022 Labour 45.6%vs SNP 41.4%-17.3%
Garscadden / ScotstounhillLabour 49.4%vs SNP 34.5%Sitting Labour x2 SNP x2no contested ballot--
KilpatrickLabour 55.1%vs SNP 31.7%2022 Labour 56.1%vs SNP 38.0%-43.1%
LevenLabour 49.3%vs SNP 37.6%2022 SNP 36.9%vs Labour 35.1%-42.1%
LomondLabour 48.9%vs SNP 34.0%2022 Labour 38.3%vs SNP 34.5%-47.5%

Projection trajectory

PollCheck's projection for West Dunbartonshire at each of the last 60 GB polls. Hover the chart for the underlying poll details.

Who has won West Dunbartonshire at past general elections?

2024 and notional 2019 rows are on current boundaries; 2010-2017 rows are on the boundaries in force at the time. More on boundaries ›

Year Result MP Lab Con LD Right (Ref/UKIP) Green Other Majority Turnout
2010Lab holdGemma Doyle61.3%7.7%8.1%1.6% UKIP-1.2%17,40864.0%
2015SNP gain from Lab CoopMartin Docherty31.3%7.0%1.6%--1.0%14,17173.9%+9.9
2017SNP holdMartin Docherty-Hughes37.7%17.2%2.3%---2,28865.2%-8.7
2019notionalScottish National Party winnerMartin Docherty-Hughes 2019 MP, pre-review boundary28.6%14.2%4.2%--53.0%9,84166.3%+1.1
2024Lab gain from SNPDouglas McAllister48.8%3.7%2.1%7.0% Ref3.8%1.0%6,01057.3%-9.0

Earlier years are on pre-2024 boundaries; comparable results on the new boundary will be added when sourced.

Constituencies most like West Dunbartonshire

Five seats with similar demographic profiles to West Dunbartonshire. Politics shown for context.

What would change this seat?

Move the sliders to set national vote shares. The per-seat projection updates live. Reset returns to the current 7-poll average.

Related

Sources

Every figure on this page is computed from the sources below. Read the full methodology ›

Show full source list
  • 2024 general election results · UK Parliament Election Results portal and House of Commons Library briefing CBP-10009.
  • Notional 2019 results on 2024 boundaries · UK Parliament Election Results portal. Recalculated by Parliament; carries assumptions about how 2019 voters would have distributed across the redrawn boundaries.
  • Historic general election results (2010-2017) · House of Commons Library historic results files (on the boundaries in force at the time).
  • Ward-level GE2024 estimates · Britain Elects / New Statesman - article by Ben Walker, underlying spreadsheet. Modelled from constituency totals; average ~4pp per-ward MoE.
  • May 2026 council ward results · Democracy Club via PollCheck's locals 2026 dataset.
  • Earlier council ward results (2014-2024) · DCLEAPIL v1.0 (Jason Leman, drawing on Andrew Teale's LEAP dataset and Democracy Club).
  • Demographics · ONS Census 2021 (England and Wales), aggregated to constituency level using the ONS LSOA21 -> PCON24 best-fit lookup.
  • EU referendum 2016 estimates · Constituency-level Leave vote estimates (Hanretty 2017 method).
  • MP details and Cabinet roles · UK Parliament Members API. MP photos are fetched live from the same source.
  • Boundary geometry and lookups · ONS Open Geography Portal (PCON24 boundaries, LSOA21 boundaries, LSOA21-WD24-LAD24 best-fit lookup).
  • Current projection and trajectory · PollCheck's demographic swingometer applied to the rolling 7-poll average from aggregated GB polls. Not a true MRP - vote-share movements are applied through per-constituency sensitivity multipliers derived from demographic regressions.

If you spot a data issue, please let us know.