The 2020 US presidential election is shaping up to be the most contentious in decades. But it might also produce the most bitterly contested result in American history.
Democrats are worried about Republican-orchestrated voter suppression and the post office's capacity to deliver an expected surge of ballots by mail before election day (November 3). President Trump, meanwhile, has cast doubt on some forms of mail-in voting himself and said that foul play is the only reason he'd lose. Add concerns about foreign meddling and there will be lots of grounds for both candidates – and their supporters – to contest an unwelcome result.