US election 2020: Trump is in the fight of his political life

Trump is now the incumbent rather than the insurgent. He’s got a record to defend. His opponent is not a hate figure like Hillary Clinton, but a genial grandfather, a likeable old man. Biden’s radiant smile has become a valuable political weapon, so, too, his long personal experience of grief. It’s partly why there seem to be fewer Trump Democrats around in 2020, and more Biden Republicans.