UK parties struggle to turn WhatsApp into campaign weapon

Just over one in 10 British WhatsApp users say they join groups with people they do not know. Photograph: Martin Meissner/APPolitical parties are trying to find ways to use WhatsApp as a campaign tool in the general election, but Britons’ reluctance to join group chats involving strangers is hindering the effort.The pro-Labour campaign group Momentum is urging supporters to sign up to its WhatsApp broadcast service to receive messages to forward to their friends, while messages targeting B