For years now, we have been kidding ourselves that Scotland is not susceptible to the kind of far-right populism that Nigel Farage has been deploying so effectively south of the border. Last night’s by-election result in Hamilton, Larkhall and Stonehouse starkly illustrates that this isn’t the case. Labour scraped a narrow victory over the SNP, although both of their vote shares went down – but Reform taking more than a quarter of the vote is the headline result.