By Josh Simons The Mayoral race is closer than you think. Susan Hall could win despite not knowing not knowing how much a bus fare is and liking Tweets by Donald Trump, says Josh Simons London is Open. With those three words, Sadiq Khan set the tone as Mayor of the UK’s capital after taking office in 2016. Yet the campaign he is now fighting may be a foretaste of things to come: a populist, right-wing Tory against a credible, professional Labour leader. To earn and re-earn his mandate, Khan has seen off some ugly opponents. First, eight years ago, Zac Goldsmith, son of a Brexit-backing million…