On Thursday the political circus came to Sin City as the US presidential candidates Kamala Harris and Donald Trump held duelling campaign rallies. Washington DC bureau chief David Smith reports. Help support our independent journalism at theguardian.com/infocus

The Guardian US writer Chris McGreal reports from his time in Saginaw, Michigan – the county that has backed the winning candidate in every US presidential election since 2008 – to find out which way America might vote on 5 November. Help support our independent journalism at theguardian.com/infocus