They're only gonna get more popular as the material conditions of the working class worsen as they're one of the only parties that's framing themselves as being against the status-quo. The UK left seriously needs better organising otherwise we're gonna see mask-off fascists in power
Labour is rhetorically almost identical to Reform UK, before we even mention the Tories, and tbqh it's hard to believe they would govern that differently.
It's an incredibly bad situation dgmw, but people really need to stop obsessing over electoral politics because you're getting fascism anyway, regardless of which party is technically in government.