Constituency profile

Ossett and Denby Dale

Yorkshire and The Humber · County constituency

Jade Botterill MP
Sitting MP

Jade Botterill

Labour

First elected July 2024

Current PollCheck projection

Region & type
Yorkshire and The Humber
County constituency
Last 5 GE winners
CLLCL
Labour 3/5, Conservative 2/5
EU referendum 2016
59.5% Leave
UK average 51.9%; +7.6pp above mean
Current outlook
Reform UK +1.3pp
Vulnerability score 9/10 (Labour projected to lose)
NorthernLeave-leaning

About the Ossett and Denby Dale constituency

Ossett and Denby Dale is a county constituency in Yorkshire and The Humber. The sitting MP is Jade Botterill (Labour), first elected in July 2024. At the 2024 general election, Labour won with 39.3% to 28.9% for the Conservatives, a majority of 4,542 votes on a 60.7% turnout. PollCheck's current projection, at the seven-poll average, has Reform UK on 29.7% and the Conservatives on 28.4%, a margin of 1.3 points - a projected change of hands from Labour.

Who lives in Ossett and Denby Dale? Constituency demographics

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

Leave vote 2016
59.5%
UK average ~52%
Degree or above
31.9%
UK average ~34%
No qualifications
17.9%
UK average ~18%
Owner-occupied
72.4%
UK average ~63%
Renting (social + private)
26.9%
UK average ~36%
Median age
45.6
UK median ~40
Age 65+
26.8%
UK average ~19%
Age 18-34
25.1%
UK average ~28%

How did Ossett and Denby Dale 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 Con · majority 4,542 votes (10.4pp) · turnout 60.7%

Current projection

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

Map of Ossett and Denby Dale

Switch between GE2024 ward winners (modelled estimates, ~4pp average error) and a demographic view from the 2021 Census. Hover any area for detail. How the map is built ›

Council layer (not Westminster)

Ossett and Denby Dale within Wakefield and Kirklees

Ossett and Denby Dale crosses council boundaries: Wakefield (70%), Kirklees (30%). The figures below are from the 7 May 2026 council elections where held, otherwise the most recent available ward result. About this layer ›

Council overlap

CouncilShare of seatProjection
Wakefield
41 LSOAs
70%View projection ›
Kirklees
18 LSOAs
30%View projection ›

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
Denby DaleLabour 41.0%vs Conservative 31.8%May 2026 Conservative 35.7%vs Reform 27.2%
Labour→Conservative
+12.1pp
-
Horbury and South OssettLabour 44.1%vs Conservative 25.5%May 2026 Reform 41.2%vs Labour 32.2%
Labour→Reform
+16.0pp
-
KirkburtonConservative 30.2%vs Labour 25.9%May 2026 Conservative 38.5%vs Reform 30.4%
Conservative share
+8.3pp
-
OssettLabour 41.5%vs Conservative 26.5%May 2026 Reform 45.8%vs Labour 25.7%
Labour→Reform
+20.1pp
-
Wakefield RuralLabour 37.7%vs Conservative 28.0%May 2026 Reform 43.8%vs Conservative 18.5%
Labour→Reform
+21.1pp
-
Wakefield SouthLabour 38.5%vs Conservative 27.5%May 2026 Reform 33.0%vs Conservative 25.1%
Labour→Reform
+14.4pp
-

Projection trajectory

PollCheck's projection for Ossett and Denby Dale at each of the last 60 GB polls. Hover the chart for the underlying poll details.

Who has won Ossett and Denby Dale 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
2010predecessorCon gain from LabSimon Reevell Dewsbury MP32.2%35.0%16.9%-1.6%14.3%1,52668.4%
2015predecessorLab gain from ConPaula Sherriff Dewsbury MP41.8%39.1%3.6%12.4% UKIP2.5%0.6%1,45167.2%-1.2
2017predecessorLab holdPaula Sherriff Dewsbury MP51.0%45.1%2.1%-1.8%-3,32169.5%+2.3
2019notionalConservative winnerMark Eastwood Dewsbury MP, pre-review boundary31.2%53.9%4.9%-1.2%8.8%11,02767.9%
2024Lab gain from ConJade Botterill39.3%28.9%4.1%21.0% Ref4.9%1.8%4,54260.7%-7.2

Ossett and Denby Dale was created or substantially redrawn by the 2023 boundary review. Pre-2024 rows below are for the predecessor seat Dewsbury (the seat that covered most of this area), so vote shares and majorities aren’t directly comparable to the post-2024 figures.

Constituencies most like Ossett and Denby Dale

Five seats with similar demographic profiles to Ossett and Denby Dale. 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.

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