Mid Sussex
South East · County constituency · Mid Sussex borough
About the Mid Sussex constituency
Mid Sussex is a county constituency in the South East. The sitting MP is Alison Bennett (Liberal Democrat), first elected in July 2024. At the 2024 general election, the Liberal Democrats won with 39.6% to 27.1% for the Conservatives, a majority of 6,662 votes on a 70.2% turnout. PollCheck's current projection, at the seven-poll average, has the Liberal Democrats on 37.4% and the Conservatives on 23.8%, a margin of 13.7 points.
Who lives in Mid Sussex? Constituency demographics
From the 2021 Census and 2016 EU referendum estimates. Constituency-level data on 2024 boundaries.
How did Mid Sussex 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 Mid Sussex
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 ›
Mid Sussex within Mid Sussex
Mid Sussex sits entirely within Mid Sussex Council. Mid Sussex was not itself in the 2026 election cycle, but the West Sussex County Council election was held on Thursday 7 May 2026; the county-division results covering this seat are shown below. About this layer ›
Council overlap
| Council | Share of seat |
|---|---|
| Mid Sussex | 100% |
West Sussex County Council election, Thursday 7 May 2026
The county council is a separate tier of local government from the district council and from Westminster. These are the results for the county divisions covering this seat; vote shares are computed from the declared per-candidate ballots.
| Division | Winner | Top 3 vote shares | Turnout |
|---|---|---|---|
| Burgess Hill East | LD | LD 39% Ref 24% Con 19% | 45.9% |
| Burgess Hill North | LD | LD 34% Ref 28% Con 22% | 45.2% |
| Cuckfield & Lucastes | LD | LD 45% Con 23% Ref 20% | 49.6% |
| Hassocks & Burgess Hill South | LD | LD 56% Ref 22% Con 10% | 53.4% |
| Haywards Heath East | LD | LD 44% Ref 24% Con 17% | 44.1% |
| Haywards Heath Town | LD | LD 42% Ref 20% Con 20% | 45.3% |
| Hurstpierpoint & Bolney | LD | LD 36% Ref 24% Con 24% | 49.3% |
| Lindfield & High Weald | LD | LD 39% Con 26% Ref 21% | 53.5% |
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 |
|---|---|---|---|---|
| Ardingly, Balcombe & Turners Hill | Conservative 34.5%vs Labour 22.8% | 2023 Green 38.1%vs Conservative 32.2% | - | 43.6% |
| Burgess Hill Dunstall | Lib Dem 36.5%vs Conservative 30.6% | 2023 Lib Dem 43.3%vs Conservative 41.4% | - | 41.3% |
| Burgess Hill Franklands | Lib Dem 42.2%vs Conservative 26.8% | 2023 Lib Dem 66.5%vs Conservative 23.7% | - | 44.2% |
| Burgess Hill Leylands | Lib Dem 39.8%vs Conservative 26.1% | 2023 Green 35.7%vs Lib Dem 34.2% | - | 55.2% |
| Burgess Hill Meeds & Hammonds | Lib Dem 43.8%vs Conservative 20.9% | 2023 Lib Dem 68.8%vs Conservative 18.9% | - | 40.8% |
| Burgess Hill St Andrews | Lib Dem 40.2%vs Conservative 27.1% | 2023 Lib Dem 25.6%vs Conservative 21.9% | - | 52.2% |
| Burgess Hill Victoria | Lib Dem 36.4%vs Conservative 26.2% | 2023 Independent 66.7%vs Labour 20.1% | - | 22.2% |
| Cuckfield, Bolney & Ansty | Lib Dem 37.8%vs Conservative 31.9% | 2023 Conservative 42.9%vs Lib Dem 24.3% | - | - |
| Downland Villages | Conservative 35.6%vs Lib Dem 34.8% | 2023 Conservative 55.5%vs Lib Dem 20.1% | - | - |
| Hassocks | Lib Dem 44.3%vs Conservative 25.3% | 2023 Lib Dem 70.2%vs Conservative 17.1% | - | 59.5% |
| Haywards Heath Ashenground | Lib Dem 38.2%vs Conservative 26.0% | 2023 Lib Dem 48.2%vs Conservative 30.5% | - | 38.8% |
| Haywards Heath Bentswood & Heath | Lib Dem 40.4%vs Conservative 24.1% | 2023 Lib Dem 41.5%vs Conservative 31.8% | - | - |
| Haywards Heath Franklands | Lib Dem 32.0%vs Conservative 30.5% | 2023 Conservative 36.6%vs Labour 36.6% | - | 40.9% |
| Haywards Heath Lucastes & Bolnore | Lib Dem 39.4%vs Conservative 25.8% | 2023 Lib Dem 39.9%vs Conservative 39.2% | - | 41.3% |
| Haywards Heath North | Lib Dem 38.3%vs Conservative 27.7% | 2023 Conservative 35.7%vs Lib Dem 30.2% | - | 40.2% |
| Hurstpierpoint | Lib Dem 46.9%vs Conservative 22.2% | 2023 Lib Dem 59.5%vs Conservative 23.8% | - | - |
| Lindfield | Lib Dem 38.5%vs Conservative 31.1% | 2023 Lib Dem 43.6%vs Conservative 35.5% | - | 43.9% |
| Lindfield Rural & High Weald | Conservative 37.6%vs Lib Dem 27.3% | 2023 Conservative 42.7%vs Green 35.0% | - | 48.0% |
Projection trajectory
PollCheck's projection for Mid Sussex at each of the last 60 GB polls. Hover the chart for the underlying poll details.
Who has won Mid Sussex 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 | Con hold | Nicholas Soames | 6.6% | 50.7% | 37.5% | 7,402 | 72.4% |
| 2015 | Con hold | Nicholas Soames | 13.9% | 56.1% | 11.5% | 24,286 | 70.9%-1.5 |
| 2017 | Con hold | Nicholas Soames | 25.0% | 56.9% | 12.7% | 19,673 | 73.2%+2.3 |
| 2019notional | Conservative winner | Mims Davies 2019 MP, pre-review boundary | 18.0% | 51.3% | 25.5% | 13,665 | 73.3%+0.1 |
| 2024 | LD gain from Con | Alison Bennett | 17.6% | 27.1% | 39.6% | 6,662 | 70.2%-3.1 |
Earlier years are on pre-2024 boundaries; comparable results on the new boundary will be added when sourced.
Constituencies most like Mid Sussex
Five seats with similar demographic profiles to Mid Sussex. Politics shown for context.
- ↑Owner-occupied71.9 / 73.3vs 61.9
- ↑Graduate40.4 / 39.6vs 33.7
- ↓Social rent11.3 / 11.0vs 16.8
- ↑Owner-occupied71.9 / 72.5vs 61.9
- ↓Leave46.4 / 45.0vs 53.2
- ↑Graduate40.4 / 42.9vs 33.7
- ↑Owner-occupied71.9 / 75.2vs 61.9
- ↓Leave46.4 / 46.2vs 53.2
- ↓No quals11.3 / 10.5vs 18.0
- ↑Owner-occupied71.9 / 70.8vs 61.9
- ↓No quals11.3 / 11.9vs 18.0
- ↓Social rent11.3 / 11.7vs 16.8
- ↑Owner-occupied71.9 / 75.2vs 61.9
- ↓No quals11.3 / 11.6vs 18.0
- ↑Graduate40.4 / 43.1vs 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.
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