How quickly do we know the results of the US election?
Switching to mail voting raises the unknown chances of Americans winning the 2020 presidential race on Election Night on November 3rd. This does not mean, however, that the results are flawed or deceptive.

President Donald Trump has repeatedly raised unfounded fears about mail-in voting fraud, which is expected to be more widely used in the November election, amid concerns over the security provided by the coronavirus pandemic.
Election officials in some key battlefield states have warned that the increase in ballots sent by mail could take days to count the votes they cast.
Since processing mail ballots is more labor intensive than individual voting, states that do not update their laws and systems for different workloads may see delays. Presidential elections since 2000 have undoubtedly led to weeks of chaos and court battles over ballot manipulation in Florida.
While each state runs its own process, it takes longer to count mail ballots. In some states, ballots may be accepted several days after Election Day, as long as there is a postmark before the election ends. While some states count ballots when they arrive, others – especially the critical battlefields of Wisconsin and Pennsylvania – have laws prohibiting the processing of mail ballots until Election Day, which guarantees that the figures will extend beyond that night. News From