Lorcan Nyhan: More mistakes from Joe Biden are inevitable, and so is Kamala Harris’s ascent

INSUBCONTINENT EXCLUSIVE:
Last Thursday, a week on from his calamitous CNN debate performance, Joe Biden gave an interview to WURD radio in Philadelphia
The interview was part of an on-going clean up job: attempts by his campaign to calm Democratic fears that the US president is no longer up
to the task of taking on Donald Trump.