The results of the election may not be fully known for many days.
Most states require the ballots to be postmarked and received by 3 November, but some require them to be postmarked the day before and received within six days, while others do. postmarked bridge on Election Day with up to 10 days or more to submit.
The dates vary whether the states favor Republicans or Democrats, creating a patchwork deadline for the ballots to reach November 23.
See which state will continue to count votes received after Election Day: