Who is the MP for Northampton South?

Mike Reader (Labour) is the MP for Northampton South. They were first elected in July 2024.

Who won Northampton South at the 2024 general election?

The 2024 general election in Northampton South was won by Labour with 38.5% of the vote, ahead of Conservative on 29.2%.

Who is projected to win the next election in Northampton South?

PollCheck's current projection has Reform UK on 32.8% and Labour on 22.6% if a general election were held today. The projection updates as new polling is added.

What council is Northampton South in?

Northampton South sits within West Northamptonshire council. Westminster constituencies and local councils are separate units, but West Northamptonshire covers most or all of the Northampton South area.

What is the demographic profile of Northampton South?

Northampton South is in East Midlands. The seat is Leave-voting (Leave vote estimated at 59.0% in 2016). Around 31.6% of residents have a degree, a median age of 38, and 66.9% of homes are owner-occupied (Census 2021).

When was the last general election in Northampton South?

The most recent general election was held on 4 July 2024. In Northampton South, Labour won with 38.5% of the vote. The next general election must be held by August 2029.

Which parties have won Northampton South in recent elections?

Recent general election winners in Northampton South: 2010 Conservative, 2015 Conservative, 2017 Conservative, 2019 Conservative, 2024 Labour.

Constituency profile

Northampton South

East Midlands · Borough constituency · West Northamptonshire borough

Sitting MP

Mike Reader

Labour

First elected July 2024

Current PollCheck projection

Region & type

East Midlands

Borough constituency, West Northamptonshire council

Last 5 GE winners

CCCCL

Conservative 4/5, Labour 1/5

EU referendum 2016

59.0% Leave

UK average 51.9%; +7.1pp above mean

Current outlook

Reform UK +10.2pp

Vulnerability score 9/10 (Labour projected to lose)

MidlandsLeave-leaning

Who lives in Northampton South? Constituency demographics

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

Leave vote 2016

59.0%

UK average ~52%

Degree or above

31.6%

UK average ~34%

No qualifications

17.2%

UK average ~18%

Owner-occupied

66.9%

UK average ~63%

Renting (social + private)

31.4%

UK average ~36%

Median age

38.3

UK median ~40

Age 65+

18.8%

UK average ~19%

Age 18-34

31.5%

UK average ~28%

How did Northampton South 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 4,071 votes (9.3pp) · turnout 62.4%

Current projection

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

Map of Northampton South

Switch between ward-level 2024 election winners and a demographic view. Ward winners are Britain Elects' / New Statesman modelled estimates with an average ~4pp margin of error per ward. The demographic view splits the seat into small neighbourhoods (around 1,500 residents each, from the 2021 Census). Hover any area for detail.

Council layer (not Westminster)

Northampton South within West Northamptonshire

The Westminster constituency of Northampton South sits entirely within West Northamptonshire Council. Local council elections are a separate ballot from Westminster general elections - the figures below are from the council elections held on Thursday 7 May 2026.

Council overlap

Council	Share of seat
West Northamptonshire 63 LSOAs	100%

Most recent council ward results

Latest council winner per ward. Where May 2026 elections happened, those are shown; otherwise the most recent year on the ward’s pre-2026 boundary (via DCLEAPIL, 2014-2024). The "Shift since GE2024" column is only computed for May 2026 results - earlier council votes pre-date the GE, so no directional shift is shown.

Loading ward results...

Ward	GE2024 winner	Latest council winner	Shift since GE2024	Turnout

Projection trajectory

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

Who has won Northampton South at past general elections?

2024 result is on current boundaries. The 2019 row is the UK Parliament's notional recalculation onto the 2024 boundaries (directly comparable to 2024). The 2010, 2015 and 2017 rows are on the boundaries in force at the time and aren't directly comparable.

Year	Result	MP	Lab	Con	LD	Right (Ref/UKIP)	Green	Other	Majority	Turnout
2010	Con gain from Lab	Brian Binley	25.4%	40.8%	19.4%	4.9% UKIP	0.9%	8.5%	6,004	61.8%
2015	Con hold	David Mackintosh	31.8%	41.6%	4.3%	18.3% UKIP	3.6%	0.4%	3,793	63.4%
2017	Con hold	Andrew Lewer	44.0%	46.9%	3.4%	4.0% UKIP	1.7%	-	1,159	66.4%
2019notional	Conservative winner	Andrew Lewer 2019 MP, pre-review boundary	30.9%	57.8%	7.9%	-	3.4%	-	13,324	69.4%
2024	Lab gain from Con	Mike Reader	38.5%	29.2%	7.3%	18.7% Ref	5.5%	0.9%	4,071	62.4%

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

Constituencies most like Northampton South

Five seats with similar demographic profiles to Northampton South. 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.

Sources

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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