Can Starmer negotiate the left’s coalition of chaos?

  • 11 March, 2026
  • Politics
  • Polling

In my latest poll we asked people whether they would, in the event of a hung parliament, prefer a coalition between the Conservatives and Reform or a coalition between Labour, the Liberal Democrats and the Greens. Those who preferred the latter (43 per cent of all voters) were asked whether they would be willing to vote tactically to prevent a Conservative or Reform candidate winning. Nearly nine in ten of them said they would, with no significant difference by current voting intention.

At face value, this augurs well for uniting the left. Assuming that left-leaning voters can always identify the tactical anti-right candidate their own seat (quite a big assumption), 87 per cent would back this candidate. With the combined vote share for Labour, the Liberal Democrats, and the Greens on 47 per cent, this implies that over 40 per cent of voters would vote tactically for a “left bloc” candidate. By contrast, as we also found, the combined vote share for a Conservative-Reform alliance is in the mid-30s.

But can we take it this face value?

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