15 million voted Tory / DUP/ Brexit Party at the last GE, all right wing parties that never have a good word to say about unions, and you're not going to get many Tory voters defending strike action now. Unions have a bad rep because of what happened in the 70s and 80s - it's never been repaired.
Sharon Graham needs to remember that while there are 7 million trade union members there is an electorate of 47 million, most of whom don't care about the unions and a good 10 million who actively despise them. Labour will not be irrelevant if they are in power, and can only start to repair the...