Riding profile

Hertsmere

UK constituency — England · Mixed · east of england

The question

Hertsmere: a safe seat for the Conservatives?

Editorial read

Hertsmere, a mixed constituency in England, elected a member with the Conservatives in the previous cycle, with a 17-point margin. The Vote-Scope model projects the Conservatives ahead at 38% vote share, against 25% for Reform UK, and the probability of a close race is negligible.

Sitting member

Sir Oliver Dowden

Sits with Conservative

Since
2015-05-07
Parliament
59th

Current forecast

Conservative

Safe

Probability
100%
Mean margin (pts)
12.6
P(close race)
0%

Projected vote share

Projection by party

  • Conservative 37.8%
  • Reform UK 25.3%
  • Labour 17.7%
  • Green 9.1%
  • Lib Dems 7.4%
  • Other 2.5%

In context

How this riding stacks up

Conservative Reform UK Labour Green
HereHertsmere 37.8%25.3%17.7%9.1%
National averageUnited Kingdom 18.9% +18.9 25.3% −0.1 21.7% −3.9 11.8% −2.8

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

Previous election · UK 2024

Won by
Conservative
Margin
16.6 pts
Margin shift vs current projection
-4.0 pts

Detailed result · UK 2024

Candidates and votes

Candidate Party Votes % Occupation
Oliver Dowden Elected Conservative 21,451 44.7
Josh Tapper Labour 13,459 28.0
Darren Selkus Reform UK 6,584 13.7
Emma Matanle Lib Dems 3,710 7.7
John Humphries Green 2,267 4.7
Ray Bolster Other 536 1.1

Demographics

Who lives here

Population
106,213
Median age
41
Employment rate
70.2%

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

Last model run
Cycle
uk_2029