How will coronavirus change the US presidential campaign?
As the Democrats settle on a de facto nominee, the pandemic raises questions about primaries, conventions and election day
The presidential vote is due to take place on 3 November. The date is set by federal law and Donald Trump has no power to delay it alone. That would require legislation enacted by Congress and signed by the president. Such an outcome still remains unthinkable to most. But many unthinkable events have unfolded recently.