UKDecides

WESTMINSTER MRP

YouGov — 23 August–18 September 2026

Fieldwork23 August–18 September 2026
SampleNearly 17,000
CommissionerYouGov

YouGov’s September 2026 Westminster MRP, based on fieldwork with nearly 17,000 Britons.

What it means Hung parliament. Labour largest party, 85 seats short of an overall majority.

SEAT ESTIMATE

Modelled seats

Labour
241
Conservative
130
Reform UK
123
Liberal Democrat
71
SNP
40
Plaid Cymru
15
Green
9

All MRP charts use the same 0–650 seat scale. The vertical marker shows the 326-seat threshold for an overall majority.

MODEL RESULTS

Published result

Vote share and seat totals are reproduced from the original MRP publication where supplied.

PartyVote shareSeats
Conservative 21% 130
Labour 24% 241
Liberal Democrat 12% 71
Reform UK 22% 123
Green 12% 9
SNP — 40
Plaid Cymru — 15

MRP estimates are modelled estimates, not constituency polls or a UKDecides forecast.

YouGov published this Westminster MRP on 24 September 2026. UKDecides reproduces the central national vote-share estimates and central seat estimates stated in YouGov’s publication.

Source: Original MRP publication