The Supreme Court just ruled that federal law doesn't stop states from counting mail-in ballots that arrive days after Election Day — and the 5-4 decision means voters in most of the country will keep watching races get called, or flipped, long after the polls shut down.

At stake is the basic transparency every citizen deserves: a count that starts and finishes on the day the law designates as Election Day. Instead, the Court cemented the status quo in 14 states and three territories where ballots postmarked by Election Day can be counted up to five business days later — or, in Washington state, up to three weeks later. California, a universal mail-in state, allows a full week. The result is a system where the apparent winner on election night can lose as late ballots continue arriving, a dynamic that has shattered public trust every cycle since 2020.

The case, Watson v. Republican National Committee, centered on Mississippi's law. The RNC and the Trump Justice Department argued that federal statutes setting Election Day as the first Tuesday after the first Monday in November should mean all ballots must be in hand by that date. Justice Amy Coney Barrett, a Trump appointee, wrote the majority opinion rejecting that reading. "The election-day statutes say nothing about ballot receipt, and we cannot add to the words Congress chose," Barrett wrote. She was joined by Chief Justice John Roberts and the Court's three liberal justices — Sotomayor, Kagan, and Ketanji Brown Jackson.

Justice Samuel Alito's dissent cut straight to the consequences. The decision, he wrote, "is inconsistent with the terms of the election-day statutes, contemporary election-law principles, two centuries of historical practice, and the case law on the question presented." He warned it "creates a serious risk of further undermining public confidence in our elections and our system of self-government." Clarence Thomas and Neil Gorsuch joined the dissent in full; Brett Kavanaugh joined in part.

The public is not with the majority. A March CRC Research poll for the Honest Elections Project found 83 percent of likely voters say mail-in ballots should not be received after Election Day. That includes 68 percent of Democrats. Seventy-eight percent of all voters said an Election Day receipt deadline "makes elections more secure."

The ruling is a significant loss for the RNC and for President Trump, who has pressed Congress to pass the SAVE America Act — a proof-of-citizenship and mail-ballot restriction bill currently stalled in the Senate. The Guardian noted the irony: Trump himself cast a mail-in ballot in a March special election for the House district containing Mar-a-Lago, according to Palm Beach County election records.

During March oral arguments, conservative justices floated hypotheticals about fraud — including whether a voter could recall a mailed ballot and change their vote. Mississippi's solicitor general Scott Stewart said there was no documented example of that ever happening. Justice Elena Kagan, meanwhile, warned that striking down Mississippi's law could threaten early voting practices entrenched in roughly 30 states, telling the RNC's lawyer it "seems inconceivable" the Court would reject those practices on the evidence presented.

The Court isn't done with election cases. The Atlanta Journal-Constitution reported Monday that the justices will hear arguments this fall on a Republican push to enforce strict Arizona voting laws, including a proof-of-citizenship requirement for state and local elections — a case with major implications for the midterms.

The question left hanging after Watson is the one Alito raised: if the law says Election Day is when the choice gets made, but the count can roll on for days or weeks, at what point does convenience for voters become cover for the people counting the ballots? Eighty-three percent of the country already knows the answer. Five justices don't.