Riding profile

Northampton South

UK constituency — England · Urban · east midlands

The question

Northampton South: will Labour lose this seat to Reform UK?

Current forecast

Reform UK

Competitive

Probability
100%
Mean margin (pts)
5.1
P(close race)
26%

Projected vote share

Projection by party

  • Reform UK 30.1%
  • Conservative 25.0%
  • Labour 23.6%
  • Green 9.9%
  • Lib Dems 8.6%
  • Other 2.4%

Watch list

The tightest races

Smallest projected margin. Open one for the numbers.

  1. Birmingham ErdingtonReform UK60 %0.5 pt margin
  2. Derby NorthLabour62 %0.5 pt margin
  3. Middlesbrough and Thornaby EastReform UK62 %0.5 pt margin

In context

How this riding stacks up

Reform UK Conservative Labour Green
HereNorthampton South 30.1%25.0%23.6%9.9%
National averageUnited Kingdom 25.4% +4.7 19.3% +5.7 21.8% +1.8 10.8% −0.9

Nationwide averages computed across the 650 riding-level projections (unweighted mean).

Editorial read

Northampton South, an urban constituency in England, elected a member with Labour in the previous cycle, with a 9-point margin. The Vote-Scope model projects Reform UK ahead at 30% vote share, against 25% for the Conservatives, and the riding remains competitive.

Sitting member

Mike Reader

Sits with Labour

Since
2024-07-04
Parliament
59th

Previous election · 2024

Won by
Labour
Margin
9.3 pts
Margin shift vs current projection
-4.1 pts

Detailed result · UK 2024

Candidates and votes

Candidate Party Votes % Occupation
Mike Reader Elected Labour 16,890 38.5
Andrew Lewer Conservative 12,819 29.2
Tony Owens Reform UK 8,210 18.7
Jill Hope Lib Dems 3,193 7.3
Simon Sneddon Green 2,398 5.5
Katie Simpson Other 296 0.7
Penelope Tollitt Other 98 0.2

Demographics

Who lives here

Population
111,318
Median age
38
Employment rate
79.5%

Data source : ONS mid-2022 population + Jan 2026 labour market

Last model run
Cycle
uk_2029