Riding profile

South Holland and The Deepings

UK constituency — England · Mixed · east midlands

The question

South Holland and The Deepings: will Conservative lose this seat to Reform UK?

Editorial read

South Holland and The Deepings, a mixed constituency in England, elected a member with the Conservatives in the previous cycle, with a 15-point margin. The Vote-Scope model projects Reform UK ahead at 36% vote share, against 30% for the Conservatives, and the probability of a close race is negligible.

Sitting member

Sir John Hayes

Sits with Conservative

Since
1997-05-01
Parliament
59th

Current forecast

Reform UK

Safe

Probability
100%
Mean margin (pts)
6.7
P(close race)
0%

Projected vote share

Projection by party

  • Reform UK 36.5%
  • Conservative 29.8%
  • Other 9.4%
  • Labour 9.3%
  • Green 7.6%
  • Lib Dems 7.3%

In context

How this riding stacks up

Reform UK Conservative Other Labour
HereSouth Holland and The Deepings 36.5%29.8%9.4%9.3%
National averageUnited Kingdom 25.3% +11.1 18.9% +10.9 4.8% +4.6 21.7% −12.4

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

Previous election · UK 2024

Won by
Conservative
Margin
14.9 pts
Margin shift vs current projection
-8.2 pts

Detailed result · UK 2024

Candidates and votes

Candidate Party Votes % Occupation
John Hayes Elected Conservative 17,462 38.0
Matt Swainson Reform UK 10,606 23.1
Paul Hilliar Labour 9,086 19.8
Mark Le Sage Other 5,031 10.9
Jack Braginton Lib Dems 1,945 4.2
Rhys Baker Green 1,800 3.9

Demographics

Who lives here

Population
111,507
Median age
46
Employment rate
80.9%

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

Last model run
Cycle
uk_2029