The Supreme Court delivered a significant blow to President Donald Trump's campaign against mail-in voting on Monday, ruling 5‑4 that states may continue counting absentee ballots that arrive after Election Day, provided they were postmarked on time. The decision in Watson v. Republican National Committee rejected a challenge by the Republican National Committee, the Mississippi Republican Party and the Libertarian Party of Mississippi to Mississippi's practice of accepting mail ballots received up to five business days after polls close.
Justice Amy Coney Barrett, a Trump appointee, wrote the majority opinion. Chief Justice John Roberts, also appointed by a Republican president, joined her alongside the court's three liberal justices: Sonia Sotomayor, Elena Kagan and Ketanji Brown Jackson. The four remaining conservative justices, led by Samuel Alito, dissented
