![Democratic Presidential Candidate Joe Biden arrives at New Castle Airport in New Castle, Delaware, on September 7, 2020. Democrat Joe Biden, his running mate Kamala Harris and Donald Trump's vice president Mike Pence head to key swing states on Labor Day -- kicking off the final stretch of the White House race in a nation battered by the Covid-19 pandemic and facing a historic reckoning on race. / AFP / JIM WATSON](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/RFEGILRTAKEJNANAIEKZBHKW2E.jpg?smart=true&auth=6373d39460ad98e010c1269d9998408d8539058c34609c44d4b358e5dfa316e9&width=400&height=225)
Democratic presidential candidate Joe Biden arrives at New Castle Airport in New Castle, Delaware, on September 7, 2020. AFP
Democratic presidential candidate Joe Biden arrives at New Castle Airport in New Castle, Delaware, on September 7, 2020. AFP
Trump and Biden trade blows as White House race hits final stretch
President once again teases possibility of Covid-19 vaccine by voting day, but experts remain sceptical
Agence France Presse
08 September, 2020