Thursday, October 15, 2026
B.C. votes in 9 days

Cardiff West

Westminster constituency · Wales

Forecast of October 15, 2026

Our forecast gives Plaid Cymru a more than 99% chance of winning, with an average lead of 10.4 points.

Safe seat. Chance of a final gap under 5 points: 4%.

Projected vote share

Projection by party

  • Plaid Cymru 30.5%
  • Labour 20.0%
  • Reform UK 16.9%
  • Conservative 13.0%
  • Green 10.8%
  • Other 4.7%
  • Lib Dems 3.7%

Thin vertical mark: 2024 result.

Compared with the average

Plaid Cymru Labour Reform UK Conservative
Cardiff West 30.5%20.0%16.9%13.0%
National averageUnited Kingdom 1.3%+29.2 24.3%−4.3 23.1%−6.2 20.4%−7.4

Simple average of the 650 ridings, not weighted by population.

Local profile

Population104,802
Median age38
Employment rate65.7%

Source: Office for National Statistics: mid-2022 population, January 2026 labour market

Current member

Mr Alex Barros-Curtis · Labour

In office since July 4, 2024. 59th Parliament.

Previous election (2024)

Labour won by 15.7 points.

Our current projection: Plaid Cymru ahead by 10.4 points.

Candidates and votes in 2024

Candidate Party Votes %
Alex Barros-Curtis Elected Labour 16,442 36.7
Kiera Marshall Plaid Cymru 9,423 21.1
James Hamblin Conservative 6,835 15.3
Peter Hopkins Reform UK 5,626 12.6
Jess Ryan Green 3,157 7.1
Manda Rigby Lib Dems 1,921 4.3
Neil McEvoy Other 1,041 2.3
John Urquhart Other 241 0.5
Sean Wesley Other 71 0.2

Nearby ridings

Party ahead and how sure the projection is.

Watch list

The tightest races

The smallest projected gaps between the top two.

  1. Birmingham Hall Green and MoseleyLabour50%1.2-point gap
  2. Hertford and StortfordReform UK44%1.4-point gap
  3. Romsey and Southampton NorthConservative54%1.4-point gap
Forecast updated