LONDON — Nigel Farage is supposed to be on his way to the east end of London, where he is due to stump for a Brexit Party candidate at a floating Chinese restaurant. Instead, he finds himself in the gilded tea room of the Ritz Hotel at 3 o’clock in the afternoon during his final election push.

“It’s off. The venue was getting threats,” he says with a sigh to the Washington Examiner.