A somewhat erratic Joseph Biden left the Democratic camp wondering whether their 81-year-old candidate would be fit for a full second term in office as President of the United States. After Thursday evening's debate with the Republican nominee and former head of state Donald Trump, aged 78, many wondered if it was not too late to seek a replacement. In truth, neither candidate has yet been officially nominated, although both have secured the required number of delegates for the Republican and Democratic National Conventions beginning July 15 and Aug. 19 respectively.
