Is this the first Ring Doorbell election? Between 2019 and last year, the share of homes fitted with a doorbell camera has jumped from 4 per cent to 11 per cent. Candidates have been complaining to the Sun that voters can now spot a leafleter and pretend not to be at home. Lord Cameron was snubbed in exactly this way last week while door knocking in Hampshire. One canvasser has apparently got round the problem by carrying a parcel so that people think they’ve got mail. If it’s bad now, though, it’s nothing compared with 100 years ago, when households would put up notices promising that “anyone found canvassing on these promises is liable to be SHOT”.