In May 2017, British Conservative prime minister Theresa May called a snap election three years early, despite having a comfortable majority in Parliament and having told the country she would not do so.
May was polling well and assumed it would be easy to push Jeremy Corbyn’s Labour opposition to a crushing defeat, winning an even bigger majority that would strengthen her hand in Brexit negotiations. Most pundits agreed this was the likely outcome.
But on polling day, May failed dismally. The Tories lost their majority. Corbyn, despite having faced bitter opposition from within his own party since being elected leader two years earlier, somehow managed to reach out over them to speak to a much wider public.
