22 Oct 2026 · 09:00Campaign day 1 of 28

CONSTITUENCY PROJECTIONS

Polling & voter model

Simulated estimates with controlled uncertainty, not live opinion polling or a guaranteed result.

Leader’s projected margin
6.5 pp
Lead exceeds model polling range
Estimated turnout
48.0%
Uncertainty ±3 pp in vote shares
Projection snapshots
1
Updated after decisions and campaign days

Projected candidate vote shares

Historical comparisons aggregate by party, not candidate identity

Candidate / partyProjected sharePollingParty change vs 2024
38.7%± 3.0 pp-0.3 pp
32.2%± 3.0 pp+0.1 pp
12.5%± 3.0 pp+1.4 pp
8.4%± 3.0 pp+1.2 pp
8.2%± 3.0 pp+1.2 pp

Campaign polling trajectory

Shared model snapshots over the campaign

0%10%20%30%40%Campaign startPolling day
LABCONLDGRNREF

How support is calculated

Starting support is based on the verified 2024 party vote where available, or clearly simulated editable estimates otherwise. National climate, approval, recognition, local connection, campaign effectiveness, spending and issue salience modify these weights. Withdrawn candidates may transfer 65% of support to a tactical endorsement.

On polling day, a seeded random draw perturbs vote shares and turnout. Twelve batches reveal the resulting finite ballot population; polling never directly supplies the final vote totals.

Previous general election

4 July 2024 · Westminster • July 2024

Labour39.0%
Conservative32.1%
Liberal Democrats11.1%
Green Party7.3%
Reform UK7.0%
Workers Party of Britain1.9%
Independent0.5%
Other parties1.2%
UK By-Election Simulator · Westminster elections onlySimulated events are not official results or live polling.Page not found
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