St Helens South and Whiston
North West · Borough constituency
About the St Helens South and Whiston constituency
St Helens South and Whiston is a borough constituency in the North West. The sitting MP is Ms Marie Rimmer (Labour), first elected in May 2015. At the 2024 general election, Labour won with 49.7% to 18.3% for Reform UK, a majority of 11,945 votes on a 53.1% turnout. PollCheck's current projection, at the seven-poll average, has Labour on 40.4% and Reform UK on 34.9%, a margin of 5.6 points.
Who lives in St Helens South and Whiston? Constituency demographics
From the 2021 Census and 2016 EU referendum estimates. Constituency-level data on 2024 boundaries.
How did St Helens South and Whiston 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
Current projection
Map of St Helens South and Whiston
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 ›
St Helens South and Whiston within St. Helens and Knowsley
St Helens South and Whiston crosses council boundaries: St. Helens (87%), Knowsley (13%). 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
| Council | Share of seat | Projection |
|---|---|---|
| St. Helens | 87% | View projection › |
| Knowsley | 13% | 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 |
|---|---|---|---|---|
| Bold & Lea Green | Labour 52.4%vs Reform 17.5% | 2022 Green 50.6%vs Labour 44.7% | - | - |
| Eccleston | Labour 44.8%vs Reform 17.9% | 2022 Lib Dem 85.0%vs Labour 9.8% | - | 34.8% |
| Peasley Cross & Fingerpost | Labour 53.0%vs Reform 18.7% | 2022 Labour 60.6%vs Conservative 20.0% | - | - |
| Prescot South | Labour 50.0%vs Reform 17.7% | May 2026 Green 50.5%vs Reform 27.4% | Labour→Green +36.4pp | 32.6% |
| Rainhill | Labour 45.0%vs Reform 18.2% | 2022 Independent 64.1%vs Labour 32.7% | - | 42.7% |
| St Helens Town Centre | Labour 49.9%vs Reform 22.6% | 2022 Labour 78.1%vs Conservative 12.4% | - | - |
| Sutton North West | Labour 50.7%vs Reform 18.4% | 2022 Labour 62.9%vs Green 21.5% | - | - |
| Sutton South East | Labour 47.3%vs Reform 18.3% | 2022 Labour 51.9%vs Lib Dem 36.8% | - | - |
| Thatto Heath | Labour 53.8%vs Reform 17.8% | 2022 Labour 78.2%vs Green 11.9% | - | 24.0% |
| West Park | Labour 50.0%vs Reform 18.8% | 2022 Labour 89.4%vs Conservative 10.6% | - | 22.5% |
| Whiston and Cronton | Labour 62.7%vs Reform 14.3% | May 2026 Reform 36.3%vs Green 34.1% | Labour→Reform +27.5pp | 31.3% |
Projection trajectory
PollCheck's projection for St Helens South and Whiston at each of the last 60 GB polls. Hover the chart for the underlying poll details.
Who has won St Helens South and Whiston 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 | Majority | Turnout |
|---|---|---|---|---|---|---|---|
| 2010 | Lab hold | Shaun Woodward | 52.9% | 17.8% | 22.2% | 14,122 | 59.1% |
| 2015 | Lab hold | Marie Rimmer | 59.8% | 15.9% | 5.7% | 21,243 | 62.3%+3.2 |
| 2017 | Lab hold | Marie Rimmer | 67.8% | 21.8% | 4.0% | 24,343 | 66.9%+4.6 |
| 2019notional | Labour winner | Marie Rimmer 2019 MP, pre-review boundary | 58.1% | 21.3% | 5.7% | 16,720 | 64.0%-2.9 |
| 2024 | Lab hold | Marie Rimmer | 49.7% | 8.0% | 5.8% | 11,945 | 53.1%-10.9 |
Earlier years are on pre-2024 boundaries; comparable results on the new boundary will be added when sourced.
Constituencies most like St Helens South and Whiston
Five seats with similar demographic profiles to St Helens South and Whiston. Politics shown for context.
- ↓Graduate27.2 / 30.2vs 33.7
- ↓Graduate27.2 / 27.3vs 33.7
- ↓Graduate27.2 / 26.6vs 33.7
- ↓Graduate27.2 / 27.4vs 33.7
- ↓Graduate27.2 / 26.9vs 33.7
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.