US presidential election, the White House race is heating up - but it has been thrown into turmoil this week.Donald Trump's campaign has come to a sensational halt after he tested positive for coronavirus and was airlifted to a military hospital on the outskirts of Washington DC.His diagnosis will mean a period of self-isolation while he receives treatment and attempts to continue working from the presidential suite at the Walter Reed National Military Medical Centre.Meanwhile, his opponent Joe Biden was tipped as the winner of the first presidential debate, held in Ohio on Tuesday night, and continues to lead in the polls.Trump has been widely criticised for his handling of the pandemic, despite his own claims that the United States is.