Monday, November 2, 2026
U.S. midterms in 1 day

Portsmouth North

Westminster constituency · England · South East

Forecast of November 2, 2026

Our forecast gives Reform UK a 61% chance of winning, with an average lead of 1.5 points.

Competitive. Chance of a final gap under 5 points: 99%.

Projected vote share

Projection by party

  • Reform UK 29.1%
  • Conservative 27.9%
  • Labour 26.8%
  • Green 7.1%
  • Lib Dems 6.7%
  • Other 2.0%

Thin vertical mark: 2024 result.

Compared with the average

Reform UK Conservative Labour Green
Portsmouth North 29.1%27.9%26.8%7.1%
National averageUnited Kingdom 22.3%+6.8 20.0%+7.9 26.5%+0.4 9.7%−2.5

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

Local profile

Population100,849
Median age39
Employment rate79.1%

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

Current member

Amanda Martin · Labour

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

Previous election (2024)

Labour won by 1.9 points.

Our current projection: Reform UK ahead by 1.5 points.

Candidates and votes in 2024

Candidate Party Votes %
Amanda Martin Elected Labour 14,495 34.9
Penny Mordaunt Conservative 13,715 33.0
Melvyn Todd Reform UK 8,501 20.4
Simon Dodd Lib Dems 3,031 7.3
Duncan Robinson Green 1,851 4.5

Nearby ridings

Party ahead and how sure the projection is.

Watch list

The tightest races

The smallest projected gaps between the top two.

  1. Inverness, Skye and West Ross-shireSNP76%1.2-point gap
  2. Bury St Edmunds and StowmarketReform UK46%1.4-point gap
  3. Romsey and Southampton NorthConservative63%1.4-point gap
Forecast updated