The race for president is razor-thin as voter counts in Georgia, Nevada and Pennsylvania are still too close to call.
The result could come down to a few thousand votes in one of these key swing states.
Donald Trump is vowing to turn to the Supreme Court to secure four more years in office as his lawyers mount a legal blitz.
As the margins tighten, Trump supporters rushed to vote counting stations in frenzied protest.
In Detroit, Michigan protesters pounded on the doors shouting 'Stop the count' but Maricopa County, Arizona, as Trump gained on Biden's lead, the president's supporters demanded officials continue to count the votes.
Correspondent Simon Marks speaks to Corin Dann from Washington as he tries to decipher the mayhem.
