# Will the margin of victory for Labour in the 2026 Greater Manchester mayoral election be above 20%

> Closed. Last odds frozen 1 d ago — final outcome on the venue.

URL: https://simplefunctions.dev/odds/manchestermov
Updated: 2026-08-02T13:20:51.885Z
Category: politics · Topic: election-2026
Status: historical
Closes: 2027-07-30

## Headline

- Leader: Labour, ≥25% at 97%
- Runner-up: Labour, ≥30% at 85%
- Outcomes: 6 (winner-take-all)
- Venue: Kalshi (6 contracts)
- 24h volume: $3K

## Bound contracts (6)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Labour, ≥25% | 97¢ | +13pp | $834 | kalshi | /markets/will-the-margin-of-victory-for-labour-in-the-2026-kalshi-kxmanchestermov-manchestermayor26jul30-lab-p62 |
| Labour, ≥30% | 85¢ | ±0 | $1K | kalshi | /markets/will-the-margin-of-victory-for-labour-in-the-2026-kalshi-kxmanchestermov-manchestermayor26jul30-lab-p65 |
| Labour, ≥45% | 9¢ | +1pp | $0 | kalshi | /markets/will-the-margin-of-victory-for-labour-in-the-2026-kalshi-kxmanchestermov-manchestermayor26jul30-lab-p72 |
| Labour, ≥50% | 9¢ | +7pp | $0 | kalshi | /markets/will-the-margin-of-victory-for-labour-in-the-2026-kalshi-kxmanchestermov-manchestermayor26jul30-lab-p75 |
| Labour, ≥35% | 7¢ | −11pp | $635 | kalshi | /markets/will-the-margin-of-victory-for-labour-in-the-2026-kalshi-kxmanchestermov-manchestermayor26jul30-lab-p67 |
| Labour, ≥40% | 3¢ | −4pp | $242 | kalshi | /markets/will-the-margin-of-victory-for-labour-in-the-2026-kalshi-kxmanchestermov-manchestermayor26jul30-lab-p70 |

## 30-day trajectory

| Day | Labour, ≥25% | Labour, ≥30% | Labour, ≥45% |
|---|---|---|---|
| 2026-07-15 | 44 | 32 | 18 |
| 2026-07-19 | — | 33 | 19 |
| 2026-07-23 | 45 | 24 | 6 |
| 2026-07-27 | 53 | 34 | 5 |
| 2026-07-31 | 71 | 39 | 5 |

_14 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-07-31 · Labour, ≥25% +13pp 58→71¢ · kalshi
- 2026-07-31 · Labour, ≥35% −11pp 29→18¢ · kalshi
- 2026-08-01 · Labour, ≥35% −11pp 18→7¢ · kalshi
- 2026-07-27 · Labour, ≥50% +7pp 2→9¢ · kalshi
- 2026-07-27 · Labour, ≥25% +6pp 47→53¢ · kalshi

## Analysis

Markets are pricing an 80% chance that Labour's margin of victory in Greater Manchester's 2026 mayoral election exceeds 20 percentage points. The contract structure reveals declining confidence at higher thresholds: while traders assess a 90% probability of Labour winning by at least 5 points, this drops to 60% for a 20-point margin. Greater Manchester's strong Labour voting history and demographic composition support larger margins, but regional economic conditions, local campaign dynamics, and potential anti-incumbent sentiment could narrow the result. The resolution depends entirely on the final election count in 2026, with no intermediate data releases to update forecasts. Market confidence diminishes substantially beyond 20 points, suggesting traders view landslide-level victories (25+ points) as roughly coin-flip scenarios.

### Key factors

- Labour's current structural advantage in Greater Manchester, measured through recent voting patterns and registered voter composition
- The steepness of the probability decline across threshold levels (90% at 5-point margin, 50% at 25-point margin) indicates genuine uncertainty about final margin size
- Turnout differential between Labour and opposition voters, which historical election data would help forecast but remains variable
- Regional economic performance and cost-of-living pressures between now and election day, affecting anti-incumbent momentum
- Emergence of competing candidates or effective independent challengers that could split the opposition vote and amplify Labour margins

## Methodology

Headline is the **leader's price**, not an arithmetic mean — averaging disjoint winner-take-all outcomes is meaningless. Per-outcome prices come from the venue's last-traded mid; cross-venue values are simple means across contracts on each venue.

## How to use this data

- HTML: https://simplefunctions.dev/odds/manchestermov
- JSON: https://simplefunctions.dev/api/public/odds?slug=manchestermov
- Topic hub: https://simplefunctions.dev/predictions/election-2026

## License

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