There are five active plots to take down Keir Starmer, says John Rentoul , with a mutinous party a mirror of the national mood. But would any of the PM’s rivals – and that includes the much fancied Manchester mayor – really do any better? W ith less than a week to go before the Budget, Keir Starmer’s leadership is on the line. Last week’s botched briefing against Wes Streeting, accused of plotting against the prime minister , has only made his position weaker. It may be that his hold on power