Starmer Set to Lose His Own Seat as Labour Faces Historic Wipeout in New MRP Bombshell

Summary: A new constituency-level MRP forecast suggests Sir Keir Starmer could lose Holborn and St Pancras to the Green Party, while Labour faces a wider collapse as Reform UK surges nationally. The projection piles pressure on the Prime Minister after another policy U-turn, with Cabinet seats also forecast to fall in large numbers.

Starmer forecast to lose Holborn and St Pancras

An Electoral Calculus MRP forecast has suggested Sir Keir Starmer is on track to lose his Holborn and St Pancras seat to the Green Party.

The constituency has been represented by Labour since it was created in 1983, with Starmer serving as MP there since 2015.

In the projection, the Greens are forecast to take the seat as Labour’s support fragments in London and other urban areas.

Labour faces “near-catastrophic” collapse in the projection

The same forecast suggests Labour would slump to sixth place nationally if a general election were held “tomorrow”, with the party reduced to 41 seats.

Labour’s projected vote share is put at 17 per cent, but the distribution of support is said to work against the party in seat outcomes.

It is the kind of headline number that will rattle MPs who already fear a bleak set of local election results in May.

“Labour are suffering double trouble from the rise of Reform on the right, and the growth of the Greens on the Left.”

“Our figures suggest a near-catastrophic wipeout for Labour, which would be the party’s worst result since February 1910 under Arthur Henderson.”

Martin Baxter, founder of Electoral Calculus

Reform UK surge and a Commons majority projection

The forecast projects Reform UK on 31 per cent and a Commons majority of 335 seats, up from its current small parliamentary base.

Conservatives are projected to become the official opposition on 92 seats, with a vote share of 21 per cent.

The Liberal Democrats and Greens are projected to follow on 60 and 52 seats respectively, while the SNP is forecast to take 44 in Scotland.

Cabinet seats and London Labour strongholds under pressure

The forecast suggests Starmer would not be the only high-profile casualty.

It projects David Lammy and Shabana Mahmood could also lose their seats to the Greens, while 16 Cabinet members are forecast to lose to Reform UK.

Projected Reform gains include seats currently held by senior figures such as Rachel Reeves, Wes Streeting, and Ed Miliband.

The MRP method and what it claims to show

The projection uses multi-level regression and post-stratification (MRP), a method that takes national polling data and models constituency-level outcomes.

Electoral Calculus said the poll underpinning the projection sampled more than 5,500 people and used demographic and local factors to estimate seat results.

MRP can highlight political direction of travel, but it is still a model, not a count of votes.

Why this matters: borders, sovereignty and trust

For many voters, the bigger story is not the modelling method but the public mood behind it: a government repeatedly changing course, paired with a cost-of-living squeeze and rising concern over border control.

That tension is now colliding with a growing appetite for tougher, clearer policy on sovereignty, migration enforcement, and democratic accountability.

Reform’s appeal is built around those themes, while Labour is being squeezed from both sides, including by Greens pushing an openly activist agenda on migration and state spending.

Pressure on Starmer after another U-turn

The forecast lands after renewed criticism of Starmer’s willingness to reverse flagship policies, including scrapping plans for compulsory digital ID in another major change of direction.

Opponents argue repeated reversals weaken confidence, especially when the state is simultaneously expanding regulatory pressure in other areas.

For Brexit voters who want less interference from Westminster, Brussels, and rights-lawfare institutions, that mix of drift and control is politically toxic.

Wales adds to Labour’s warning lights

Separate polling referenced in the report suggests Labour could fall to fourth place in Wales at local elections in May.

The figures put Plaid Cymru on 37 per cent, Reform on 23 per cent, and the Greens on 13 per cent, with Labour on 10 per cent, level with the Conservatives.

If that pattern holds, it would deepen internal Labour unrest and strengthen the argument that the party’s coalition is cracking across the UK.

What happens next in Westminster

Projections like this tend to trigger two reactions inside Parliament: panic and plotting.

Labour MPs in marginal seats will demand sharper positioning on borders, crime, tax and household bills, while the leadership will try to hold together its increasingly incompatible factions.

Meanwhile, Reform will use forecasts like this to present itself as a government-in-waiting, and the Conservatives will be forced to decide whether to keep managing decline or rebuild around small-c conservatism: low tax, limited state, strong borders, and national sovereignty.

“Economic issues like the cost of living are very important to voters.”

“Labour might also capitalise on the sketchiness of Reform and Green economic plans.”

Martin Baxter, founder of Electoral Calculus