A progressive, mustachioed Bernie Sanders supporter has shot to fame after announcing a challenge to Republican house speaker Paul Ryan. Democrat Randy Bryce, who goes by @IronStache on Twitter, is an ironworker, union organiser and veteran who launched his bid for Wisconsin’s first congressional district on Monday. Since then, his evocative campaign advert, which shows a denim- and boot-clad Bryce discussing healthcare with his mother and engaging in various forms of metalwork, has been watched more than 330,000 times, and the 52-year-old has attracted a level of internet acclaim rarely seen among political candidates. “I knew that we would have...