Andy Burnham has been prime minister for three months and the vibes are, by every measurable indicator, working. Politico's Poll of Polls has Labour back in first place since he took over. Ipsos finds him the only UK politician with a positive net favourability. YouGov concurs. For a party that burned through credibility under Keir Starmer, this is a remarkable reset — achieved largely through emotional register and a handful of quick-hit domestic policies. The early moves were calibrated for maximum visibility at minimum fiscal cost: capped bus fares, a VAT cut on electricity bills, reduced business rates for pubs. These are consumer-facing signals designed to say 'we feel your pain' without requiring structural reform. They land well in news cycles. Whether they move the needle on actual living standards is a different question entirely. The grander ambitions are where the arithmetic gets uncomfortable. Burnham has pledged to end street homelessness, reindustrialise Britain, return services to public control, and deliver the biggest social housing build since World War II. At conference, he added a national social care service — free at point of use — funded by reforming the pensions triple lock from 2030. He floated electoral reform and declined to rule out a referendum on EU membership. Each of these is a generational project. Stacked together, they are a fiscal mountain. Defence spending compounds the problem. The government's pledge stands at 3.5 percent of GDP by 2035. John Healey, who resigned as defence secretary over underfunding and is now chancellor, will not even commit to the 3-percent-by-2030 target he previously set himself. Burnham has refused to say whether the gap gets filled by tax rises or welfare cuts. The first budget, due at the end of October, will force some of these contradictions into the open. On foreign policy, Burnham is continuity Britain with softer edges. A visit to Kyiv with SCALP missile technology continues the bipartisan commitment to Ukraine. On Gaza, he has said Labour should have called for a ceasefire earlier and announced sanctions on illegal West Bank settlements — but there is no genocide declaration, no full arms embargo, and Palestine Action remains proscribed as a terrorist organisation. The gap between rhetorical repositioning and policy change is wide. The structural question is whether emotional authenticity can substitute for delivery over a three-year runway to 2029. Burnham's political analyst Sam Freedman frames it precisely: nobody in Westminster can figure out how to keep the hope vibe going with 'relatively little visible progress.' The answer is that vibes are a depreciating asset. They buy time for policy to mature, but they do not replace it. Every month without tangible change draws down the account. The budget will be the first real stress test. If Burnham can match even two or three of his headline pledges with credible funding mechanisms, the emotional capital converts into political capital. If the numbers don't add up — or if Healey's Treasury instincts produce austerity by another name — the hope vibe becomes a liability. Britain has cycled through seven prime ministers in a decade. The country is not short on fresh starts. It is short on follow-through.