Americans betting against Biden

Odds of the incumbent president withdrawing have reached as high as 84%

The odds of Joe Biden dropping out of the US presidential race reached as high as 84% on Friday, according to the predictive betting site Polymarket.

The 81-year-old incumbent president has been quarantined at his Delaware home since Wednesday, after testing positive for Covid-19. Calls for him to make way for another Democrat have grown louder since last Saturday’s...