Who was behind poll predicting Tory wipeout – and what do they want?

Nobody seems to know mystery organisation that funded YouGov survey but its agenda is clear

At the centre of this week's mega-poll that projected an election wipeout for the Conservatives there lurked both a mystery and a statement of the obvious. Who was behind it? No one seemed to know. But what do they want? Seemingly, a change from Rishi Sunak.

It is a sign of Sunak's plight that the poll - fronted by a Tory peer and explicitly framed as showing the prime minister's policies are leading the party into doom - was not even the greatest act of disloyalty in a week when 60 backbenchers voted to amend his flagship migration policy.