Who Supports “Your Party”? The New Political Force Backed by the Young Left

Jeremy Corbyn and Zarah Sultana’s new party, Your Party, is already proving to be one of the most significant shake-ups in British politics since the rise of Reform UK. With over 600,000 sign-ups and launched on a platform of anti-establishment values, economic justice and bold progressive messaging, it appears to be capturing the hearts of a large and distinct voter bloc that feels politically homeless under Keir Starmer’s Labour leadership.

Despite being in its infancy, the first comprehensive wave of polling reveals that Your Party already commands support from nearly one-third of the public. The data paints a picture of a new political movement that is powered by those on the left and young voters seeking a more radical and authentic alternative. [\[1\]](/research/who-supports-your-party-the-new-political-force-backed-by-the-young-left)

A Strong Debut: 32% of Voters Back the Party

In total, 32% of Britons say they either “strongly support” (11%) or “somewhat support” (21%) Your Party, while 17% “somewhat oppose” the new movement and 30% “strongly oppose” it, there remains a sizable 21% who say they “don’t know”, understandable considering they have just started.

This is a striking result for a party with no MPs, no manifesto and only limited media coverage. It speaks to the power of Corbyn’s residual support among the Labour left, the rising profile of Sultana and the vacuum in UK politics for an explicitly anti-establishment, pro-working class political voice.

Youthful Momentum: The Young Form the Core Base

The strongest indicator of Your Party’s base is age. Support is overwhelmingly concentrated among younger voters, especially those aged under 45. Among 18–24-year-olds, 49% support the party, 16% strongly and 33% somewhat. The 25–34 age group is nearly identical, with 48% expressing support, while 46% of 35–44-year-olds also back the party.

This generational pattern sharply contrasts with older age groups. Among those aged 65+, only 19% express support while 45% say they “strongly oppose” the party. The generation that grew up under Blair and Cameron is clearly looking for something new, while older generations remain sceptical, perhaps associating Corbynism with perceived past failures or radicalism.

Gender Gaps: Modest But Meaningful Differences

While overall support is similar between men (34%) and women (30%), there are interesting divergences. Men are more likely to say they “strongly oppose” the party (33%) compared to women (28%), while women are more likely to be undecided (24% vs 17%).

This uncertainty among women could reflect a desire to see more clarity around leadership, policy and values and may suggest a future growth area for the party.

Regional Support: London and the North Lead the Way

Regionally, Your Party’s strongest support is found in London, where 52% of voters back the new party. London is the only region where Your Party receives net positive support but the North West (37%) does show stronger support than other regions. These are densely populated, diverse and economically challenged regions that have long formed Labour’s heartlands but where many feel let down by the party’s shift to the centre.

Meanwhile, Eastern (62%), North East (58%) and Wales (52%) show the most resistance. But the North East has the strongest opposition to the new party (43% strongly oppose) which is interesting considering leader Jeremy Corbyn’s historical ties to the region, regularly attending the Miners Gala in the North East.

Party Background: Labour’s Left, the Greens and the Disaffected

The party’s base is clearly being drawn from disillusioned Labour and Green voters. Among 2024 Labour voters, 47% now support Your Party, while 38% oppose it. This suggests that a substantial portion of the Labour base remains ideologically to the left of Starmer and is open to an alternative.

Support is even higher among Green voters, with 50% expressing support, including 29% who say they “strongly support” the party. This overlap could create tensions as both parties compete for similar voters, particularly in cities and younger areas.

Liberal Democrat and SNP voters are more divided but Reform UK and Conservative supporters are overwhelmingly hostile: 47% of Reform voters and 43% of Conservatives say they “strongly oppose” Your Party, suggesting little room for crossover appeal on the right.

A Big Unknown: The “Don’t Know” Vote

Perhaps the most intriguing figure in the data is that 21% of the electorate say they “don’t know” whether they support Your Party. This group is disproportionately female, older and support either the Green or Liberal Democrat party.

In other words, they are not opposed to the party, they are simply waiting for more information. As Your Party defines itself more clearly, through campaigns, policies and local candidates, it could convert many of these unsure voters into committed backers.

Though still early days, Your Party is clearly more than a fringe project. It has galvanised a distinct and significant segment of the electorate, young and left-leaning.

This group is underserved by both Labour and the Conservatives and increasingly sceptical of the political centre. If Your Party can maintain momentum, build trust and develop a coherent policy platform, it could follow Reform UK’s trajectory and pose a serious challenge, not just to Labour but to the political order as a whole.

For now, its core support rests on a fragile coalition of idealism, economic frustration and anti-establishment energy. But with 32% of the public already expressing some level of support, over 600,000 people signing up already and millions more unsure, the potential to disrupt the political order has started.

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[\[1\]](/research/who-supports-your-party-the-new-political-force-backed-by-the-young-left) BBC News

Download the data tables for this poll.