The Iranian supreme leader has mocked the U.S presidential election and democracy, describing it as a spectacle.
There is tension in both camps, as no one can clearly state they have already won the tight presidential poll.
Joe Biden has expressed confidence that he will win the election and has enough states in the bag to reach the magic number of 270 electoral votes.
His statement came as he was projected to win the critical battleground states of Michigan and Wisconsin, taking his tally to 253. He also holds narrow leads in swing states of Nevada and Arizona, while President Donald Trump leads in Pennsylvania, Georgia and North Carolina.