Prime Minister Keir Starmer has endured the biggest drop in approval ratings for any new UK PM in the modern era.Keir Starmer’s approval ratings has declined by a historic amount after less than four months in office, according to a new poll.The prime minister’s popularity was at plus 11 – when taking the average result of approval and disapproval scores – in July, after Labour swept to victory on a landslide in the election. However, pollsters at More in Common have now found his personal rating has dropped to -38, a net drop of 49.That score is lower even than Rishi Sunak’s rating of -37 after he led the Tories through a historic election loss in July. Surprisingly, considering how he has largely avoided the public eye amid the contest to replace him, the outgoing party leader is now on -31.&