Survation and 38 Degrees have mapped Labour's electorate into five voter segments they call the "progressive majority" — the collective pool from which Labour, the Greens, Lib Dems, Plaid, and the SNP draw support. The research, based on polling of more than 8,000 voters, finds that nine in ten current Labour voters belong to one of these five groups, up from eight in ten at the 2024 general election. That concentration is not a sign of strength. It means Labour's remaining support is almost entirely progressive, with centrist and conservative-leaning voters already gone. The five segments — rooted traditionalists, open-hearted idealists, quiet persuadables, trusting optimists, and struggling sceptics — share one thing: cost of living is their dominant concern, cited by 54% to 77% across all groups. Health and the NHS ranks second. Beyond that, the coalition fractures. Immigration is cited by 34% of rooted traditionalists and 28% of struggling sceptics, but just 5% of open-hearted idealists. The climate crisis shows the exact inverse: 29% among idealists, 10% among traditionalists. The bleeding is concentrated in two groups. Struggling sceptics — the least financially secure, least trusting, and least electorally engaged segment — have seen Labour support collapse from 39% to 25%. Both the Greens (21%) and Reform (18%) have gained substantially among them. Rooted traditionalists, older and economically left-leaning but hawkish on immigration, are drifting toward Reform. These are not voters who respond to messaging; they respond to material change in bills, wages, and NHS wait times. Open-hearted idealists remain the largest bloc of Labour support at 28%, but they are bleeding to the Greens, who now command 23% of this group. These are affluent, highly educated, socially liberal voters for whom tougher immigration rhetoric is actively repellent. Labour cannot court rooted traditionalists on immigration without accelerating idealist defection to the Greens — a genuine strategic bind. The quiet persuadables and trusting optimists have remained relatively loyal. Trusting optimists — young, urban, affluent graduates with high institutional confidence — have actually increased their share of Labour's base by four percentage points. But their loyalty is conditional on economic circumstances remaining favorable. Quiet persuadables, the youngest and least politically committed segment, are spread across parties and represent the most tactical-voting-prone group. The research's most politically consequential finding is on immigration trust. Reform leads Labour by 10 points on immigration (31% vs 21% public-wide), but the researchers argue this is less dangerous than it appears because immigration is not a vote-deciding issue for most of the progressive majority. Labour leads Reform on every other major issue: NHS by 12 points, cost of living by six. The strategic implication is that Labour's best play is material delivery on cost of living and health, not a pivot to immigration hawkishness that would fracture the idealist wing. Damian Lyons Lowe of Survation frames these five segments as having "very different views on social and economic" questions but sharing enough common ground on kitchen-table economics to be holdable. The question for Andy Burnham's conference platform is whether tangible delivery — lower bills, shorter waits, wage growth — can arrive fast enough to prevent struggling sceptics and rooted traditionalists from completing their migration to Reform and the Greens respectively. The progressive majority exists on paper. Whether it exists as a governing coalition depends entirely on whether the cost-of-living consensus can bear the weight of everything else these groups disagree about.
