US supreme court to decide if states can accept late-arriving mail ballots

Case involves a challenge to a Mississippi law that allows ballots to count if they are received days after election day

The US supreme court announced on Monday it will hear a high-stakes case about whether states can accept mail-in ballots that arrive after election day, even if they are filled out and mailed before then.

The case, Watson v Republican National Committee, involves a challenge to a Mississippi law that allows ballots to count if they are received within five business days of election day.