Riding profile

Colchester

UK constituency — England · Urban · east of england

The question

Colchester: who wins this toss-up?

Editorial read

Colchester, an urban constituency in England, elected a member with Labour in the previous cycle, with a 18-point margin. The Vote-Scope model projects Labour ahead at 28% vote share, against 26% for Reform UK, and the race could swing.

Sitting member

Pam Cox

Sits with Labour

Since
2024-07-04
Parliament
59th

Current forecast

Labour

Toss-up

Probability
100%
Mean margin (pts)
1.0
P(close race)
100%

Projected vote share

Projection by party

  • Labour 28.3%
  • Reform UK 25.9%
  • Conservative 19.8%
  • Lib Dems 14.0%
  • Green 9.8%
  • Other 1.9%

In context

How this riding stacks up

Labour Reform UK Conservative Lib Dems
HereColchester 28.3%25.9%19.8%14.0%
National averageUnited Kingdom 21.7% +6.6 25.3% +0.6 18.9% +0.9 11.6% +2.4

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

Previous election · UK 2024

Won by
Labour
Margin
18.4 pts
Margin shift vs current projection
-17.4 pts

Detailed result · UK 2024

Candidates and votes

Candidate Party Votes % Occupation
Pam Cox Elected Labour 18,804 41.9
James Cracknell Conservative 10,554 23.5
Terence Longstaff Reform UK 6,664 14.8
Martin Goss Lib Dems 6,393 14.2
Sara Ruth Green 2,414 5.4
James Rolfe Other 74 0.2

Demographics

Who lives here

Population
115,314
Median age
36
Employment rate
78.3%

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

Last model run
Cycle
uk_2029