LONDON — A majority of Brits think Prime Minister Keir Starmer should resign in the wake of new revelations about ex-ambassador to the U.S. Peter Mandelson’s links to Jeffrey Epstein, according to new results from The POLITICO Poll. The online survey, conducted this past weekend by the independent London-based polling company Public First, reflects the perilous position Starmer, already unpopular with the public despite Labour’s landslide 2024 victory, is in over his decision to appoint