Nobody said that they did, Pantglas. That 60- 70% will include moderate, one Nation, tories, LibDems, SNP, Plaid Cymru, Greens and Labour.
I'd also point out that persistently saying that Labour is 'far left' doesn't actually make them so. It has been noted many times on GNet that Labour policies would be regarded as perfectly normal in other countries, such as Scandinavian ones, that are in no way 'far left'.
They're not even as 'far left' as the post WW2 Labour government which nationalised road freight, the railways, mining, steel production.. And we lived perfectly happily for years with centralised control of electricity, water. the post office..