Green Party surge sees half of Londoners considering voting them

According to new polling from Ipsos, more than half of Londoners are considering a switch to the Green Party. This is good news for it, but it’s also a sign that they need to keep fighting to earn every vote.

Excl: Half of Londoners are considering voting for Zack Polanski's Green Party in the upcoming local elections according to new polling by @Ipsos, shared with the @NewStatesman pic.twitter.com/p1O0lJ0kwk

— megan kenyon (@meganekenyon) April 21, 2026

And this isn’t the only positive poll for the Greens either.

The Green Party on the up

As Kenyon notes, the Gorton & Denton by-election proved to voters that the Green Party aren’t a wasted vote. That by-election showed us something else too; namely that polling tends to underestimate the Green Party.

The following was the final tally in Gorton & Denton:

‼️ Gorton and Denton by-election result:

🟢 Grn: 40.7% (+27.5)
➡️ Ref: 28.7% (+14.6)
🔴 Lab: 25.4% (-25.4)
🔵 Con: 1.9% (-6.0)
🟠 Lib: 1.8% (-2.0)

Green GAIN from Labour (26.5% swing) pic.twitter.com/s49MGW8Uom

— Stats for Lefties 🍉🏳️‍⚧️ (@LeftieStats) February 27, 2026

In the runup to election day, some polls had the Greens in the lead, but they didn’t have them outperforming the runner up by 12 percentage points:

🚨 Final estimate for Gorton and Denton:

🟢 Grn: 31% (+18)
➡️ Ref: 28% (+14)
🔴 Lab: 27% (-24)

Green GAIN from Labour (+/- vs GE2024) pic.twitter.com/xO5zyhef02

— Stats for Lefties 🍉🏳️‍⚧️ (@LeftieStats) February 26, 2026

While the latest poll is good news, leader Zack Polanski is urging his fellow Green Party members to keep up the energy:

This is all really promising – but there's no space for complacency at all. Nothing is certain.

We will be out campaigning for every single vote in the next couple of weeks.

Join us: https://t.co/Q27Jy5eX7z https://t.co/2MqpRPGOlW

— Zack Polanski (@ZackPolanski) April 21, 2026

The Greens have had other favourable polls too:

There’s a scenario here where the Greens gain more seats than reform on May 7th?? 🤯

That would be absolutely wild. More in common polls don’t even usually put the Greens as high as other pollsters. https://t.co/iyf8mb8tMP

— Zoe Gardner (@ZoeJardiniere) April 21, 2026

In full, the post Gardner is replying to reads:

More in Common Locals Seat Projection Scenarios:

Low Estimate:
Reform: +1,273
Green: +573
Lib Dem: +148
Labour: -1,867
Conservative: -692

Middle Estimate:
Reform: +1,437
Green: +926
Lib Dem: +327
Labour: -1,738
Conservative: -627

High Estimate:
Green: +1,741
Reform: +1,603
Lib Dem: +503
Labour: -1,597
Conservative: -368

Source:
@Moreincommon_
May 7 Briefing

In other words, the Greens could do well in May, or they could do really well, or they could do really, really fucking well.

The poll story

Of course, polls don’t actually predict the future, and not every poll is brilliant for the Green Party. As we reported earlier today, the latest YouGov poll presents a favourable picture for Reform, but they also had positive predictions in Gorton & Denton.

The Greens are clearly persuading voters that they’re worth considering, and that’s a victory regardless of how many seats they ultimately win.