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UK Local Elections 2026
6MAY

Reform projected to 2,342 council seats

5 min read
17:39UTC

PollCheck projects Reform UK to gain more than 1,300 England council seats overnight, a 780-fold expansion from a base of 3 to 2,342. The Greens add 555 to reach 696. The arithmetic falls out of FPTP, not the votes.

PoliticsAssessed
Key takeaway

PollCheck projects Reform UK adding 1,300 council seats on 7 May to reach 2,342 across England.

PollCheck projects Reform UK to gain more than 1,300 council seats on Thursday, taking its total from a base of 3 to 2,342 councillors 1. The Green Party projects to gain 555 seats to reach 696. The redistribution extends the picture from the three rural counties first projected by PollCheck in mid-April and the metropolitan boroughs added a fortnight later to a national reordering of English local government.

YouGov's West Midlands MRP, with fieldwork to 27 April on more than 2,000 respondents, projects Reform leading in 11 of 13 councils. Welsh Labour holds nothing in the West Midlands (Wales is a separate count); the English Labour Party retains only Birmingham and Coventry, with both contests projected within five points across Reform, Labour and the Greens. Labour's vote drops by more than 20 points in 10 of the 13 authorities: Birmingham minus 30, Tamworth minus 30, Sandwell minus 32 2. The Conservatives lose 24 to 31 points across the same map. Wolverhampton, Walsall and Sandwell are not the rural Leave-voting territory Reform polled best in a year ago; they are the post-industrial Labour heartland.

In London the picture inverts. YouGov's London MRP (n=4,548) puts the Greens in the lead in 4 boroughs, the first time the party has been projected to control any London council, and second to Labour in another nine wards across Hackney, Lambeth, Lewisham, Haringey, Brent and Ealing 3. Sixteen of the 32 London boroughs sit within five points between first and second place, which means a Friday recount in half the capital. Reform leads three boroughs in outer London.

Wales runs the same five-party fragmentation through different arithmetic. Wales projects 96 Senedd seats from 16 six-member constituencies under closed-list PR; Plaid Cymru's 33% becomes 43 seats and Reform's 29% becomes 34. England projects 5,000+ council seats from ward-level FPTP; Reform's 25% national share becomes 2,342 council seats and The Greens' 15% becomes 696. The same five-party fragmentation produces near-linear proportionality on the Welsh side of the Severn and county-level dominance on the English side. England, Scotland and Wales will count the same fragmentation through three different formulae overnight.

Deep Analysis

In plain English

In England's council elections, each ward elects one or more councillors and the person with the most votes wins, even if they have less than half the total. Under this system, a party with 25% of the vote concentrated in the right areas ends up with a large number of seats. If Reform wins 25% in wards where Labour used to win on 45%, and that 45% has now split three or four ways, Reform might win with 25% against a Labour vote of 15% and a Conservative vote of 12%. That maths, repeated across thousands of wards, is how a party with 25% of national votes ends up projected to 2,342 of the available seats. Meanwhile, the Greens at 15% nationally but spread thinner and concentrated in cities and university towns win 696 seats. The same number of votes, distributed differently, produces a 3-to-1 seat advantage for Reform.

Deep Analysis
Root Causes

1. **Five-party fragmentation in a single-seat ward system.** English council wards return one or two councillors under FPTP. Reform's 25% national vote share, concentrated in post-industrial wards where Labour once held 60 to 70% and that vote has now split four ways, produces a plurality in ward after ward despite representing a minority of the total vote.

2. **Post-Brexit geographic realignment.** Reform's strongest concentration is in wards with high proportions of white non-graduate voters in the East Midlands, East Anglia and West Midlands: exactly the geography the 2016 Leave vote produced. The 2024 general election established the geographic template; the 2026 locals run on the same map.

3. **Labour's 2022 council baseline at inflated vote share.** Most of the 2026 English council seats up for election were last contested in 2022, when Labour held approximately 35 to 40% in many of these wards. The party is now defending those seats on approximately 16 to 18% nationally, a structural mismatch that produces seat losses far larger than a uniform swing analysis would predict.

4. **Candidate density reaching 4.9 per seat.** Democracy Club records 4.9 candidates per English council seat in 2026, up from 3.8 in 2024. More candidates splitting the non-Reform vote in each ward reduces the threshold needed for a Reform plurality.

What could happen next?
  • Risk

    Reform's projected 2,342 seats include a significant proportion of thin-margin wards; the Kent attrition pattern (65 of 677 councillors departed in one year) suggests the governing majority in several county councils may erode significantly before the 2030 cycle.

    Medium term · 0.7
  • Consequence

    Reform taking majority control of Essex, Norfolk and Suffolk puts approximately £3 billion in combined county council service budgets under a party that has never run a local authority at scale.

    Immediate · 0.85
  • Opportunity

    The Green Party winning its first London borough majorities outside Brighton establishes a governing record in major cities that the party has never held before, with material consequences for the party's credibility in the 2028 general election contest.

    Medium term · 0.7
First Reported In

Update #6 · 1 Days to Go: D'Hondt squeezes Welsh Greens

PollCheck· 6 May 2026
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