Rishi Sunak’s closest parliamentary aide placed a £100 bet on a July election just three days before the prime minister called it. The Gambling Commission is said to have launched an inquiry after Craig Williams, the Conservative candidate for Montgomeryshire & Glyndwr placed a bet with the bookmaker Ladbrokes on Sunday 19 May in his local constituency of Montgomeryshire. Just three days later, Sunak announced that a general election would be held on July 4 in a surprise announcement. In a statement, Williams said: “I’ve been contacted by a journalist about Gambling Commission inquiries into o…