Riding profile

Merthyr Tydfil and Aberdare

UK constituency — Wales · Mixed · wales

The question

Merthyr Tydfil and Aberdare: will Labour lose this seat to Reform UK?

Editorial read

Merthyr Tydfil and Aberdare, a mixed constituency in Wales, elected a member with Labour in the previous cycle, with a 21-point margin. The Vote-Scope model projects Reform UK ahead at 31% vote share, against 21% for Labour, and the probability of a close race is negligible.

Sitting member

Gerald Jones

Sits with Labour

Since
2015-05-07
Parliament
59th

Current forecast

Reform UK

Safe

Probability
100%
Mean margin (pts)
9.9
P(close race)
0%

Projected vote share

Projection by party

  • Reform UK 30.9%
  • Labour 21.4%
  • Plaid Cymru 21.1%
  • Green 11.0%
  • Conservative 7.1%
  • Lib Dems 4.9%
  • Other 3.4%

In context

How this riding stacks up

Reform UK Labour Plaid Cymru Green
HereMerthyr Tydfil and Aberdare 30.9%21.4%21.1%11.0%
National averageUnited Kingdom 25.3% +5.6 21.7% −0.2 1.0% +20.1 11.8% −0.9

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

Previous election · UK 2024

Won by
Labour
Margin
21.1 pts
Margin shift vs current projection
-11.2 pts

Detailed result · UK 2024

Candidates and votes

Candidate Party Votes % Occupation
Gerald Jones Elected Labour 15,791 44.8
Gareth Thomas Reform UK 8,344 23.7
Francis Whitefoot Plaid Cymru 4,768 13.5
Amanda Jenner Conservative 2,687 7.6
Jade Smith Lib Dems 1,276 3.6
Peter Griffin Green 1,231 3.5
Anthony Cole Other 531 1.5
Lorezo De Gregori Other 375 1.1
Bob Davenport Other 212 0.6

Demographics

Who lives here

Population
99,698
Median age
41
Employment rate
69.3%

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

Last model run
Cycle
uk_2029