That's the million dollar question, that most have avoided answering on here (for obvious echo chamber reasons). I'll answer it by saying no, I think it's extremely difficult. There hasn't been in recent times a left wing government across Europe, more centre left if anything that has power, closest was probably Costa in Portugal or Macron in France.Do you think it’s possible to get a left-wing party into government?
The challenge the Labour party has here is to understand that in order to employ some of the forward thinking policies, is that it needs to win a General Election first. Frustratingly parts within it decide a big game of who was right & wrong in whatever twitter 'analyst' says happened over the last 3 years, it needs to recognise it's position & understand what will make them win a democratic process going forward. Otherwise the policies have no chance of being implemented, and is just a waste of oxygen.