SCOTUS weighs whether federal law kills state mail ballot grace periods

Watson v. RNC (Supreme Court No. 24-1260) asks one core question: does the federal statute setting a uniform Election Day for congressional races prohibit states from counting mail ballots that arrive after that day, even if they were postmarked on time? The Republican National Committee sued 🎸Mississippi Secretary of State MWMichael Watson, arguing that Mississippi's grace period (which gives mail ballots three days after Election Day to arrive) violates federal law by effectively extending the election past the uniform date Congress set.

The Fifth Circuit agreed with the RNC in October 2024. A three-judge panel of Trump appointees (Judges James Ho, KDKyle Duncan, and AOAndrew Oldham) ruled that 2 U.S.C. Section 7 (the federal statute establishing the first Tuesday after the first Monday in November as Election Day) preempts any state rule that counts ballots arriving after that date. The majority read "time of election" as encompassing not just when voters cast ballots but when those ballots must be received and counted.

Fourteen states and the 🏛️District of Columbia have grace periods as of 2026. They include 🌴California (three days), 🏛️Virginia (three days), 🗽New York (seven days), 🦀Maryland, 🏖️New Jersey, 🌰Ohio, 🌲North Carolina, 🔔Pennsylvania, 🦆Minnesota, 🎰Nevada, 🌺Hawaii, 🏛️Massachusetts, 🦞Connecticut, and 🐻Alaska (up to 10 days for absentee ballots in remote areas). These grace periods exist because the U.S. Postal Service doesn't guarantee that a ballot mailed on Election Day will arrive the same day. Rural voters, overseas military voters, and people in zip codes with slower postal delivery times face the most risk when grace periods vanish.

The Election Assistance Commission held an emergency session in Chicago on April 14, 2026. DCDustin Czarny, Elections Commissioner for Onondaga County, 🗽New York, told the commission that a last-minute Supreme Court ruling against grace periods before the November 2026 midterms would be "akin to a natural disaster" for election administrators. States would need to reprogram ballot-counting software, retrain poll workers, and reprint voter instructions, all potentially within weeks of a mid-June decision.

During oral argument on March 23, the justices' questions revealed a court divided and uncertain. Justice ACAmy Coney Barrett, appointed by President Donald Trump, asked whether early voting and in-person absentee voting also create elections that extend beyond the statutory Election Day, suggesting she was looking for a principled line between permitted and prohibited extensions. Justice BKBrett Kavanaugh, also appointed by Trump, raised the "red mirage" phenomenon: when in-person votes are counted first and mail ballots counted later, early results often favor Republicans before flipping toward Democrats as the count continues.

Kavanaugh said: "The longer after Election Day any significant changes to totals take place, the greater the risk that the losing side will cry that the election has been stolen." Election law observers raised concern that Kavanaugh was importing partisan optics into what should be a pure question of statutory preemption.

Justice SSSonia Sotomayor, appointed by President Barack Obama, argued directly that Congress couldn't have intended the uniform Election Day statute (passed in 1872) to govern modern mail ballot counting procedures that didn't exist then. She pressed PCPaul Clement, the RNC's lead attorney, on how a law from the 19th century could preempt administrative accommodations for postal delays when mass mail voting didn't arrive until the 20th century.

Chief Justice John Roberts, appointed by President George W. Bush, also asked questions suggesting he wanted a narrow ruling rather than a sweeping preemption doctrine. Roberts pressed both sides on whether state laws permitting early in-person voting are meaningfully different from grace periods. His line of questioning signaled he might be looking for a limiting principle that stops short of invalidating all extended election timelines.

PCPaul Clement is one of the most experienced Supreme Court advocates in the country and served as U.S. Solicitor General under President George W. Bush. His argument for the RNC relies on a strict textualist reading of the statute. Clement argued that when Congress passed the law establishing the Tuesday after the first Monday in November as Election Day, the casting of ballots and the state's receipt of ballots were "so inextricably intertwined" that "no one would have thought of one without the other."

Clement's position tracks the "independent state legislature" theory that had support among conservative justices before the Court rejected its broadest form in Moore v. Harper (2023). The Watson argument doesn't invoke that theory directly, but it relies on the same strict reading of legislative authority over elections.

LFLynn Fitch, 🎸Mississippi's Attorney General, supported the RNC's position. This stance is unusual for a state official arguing that her own state's election law should be invalidated. Fitch's alignment with the RNC reflects Mississippi's Republican political leadership viewing the case strategically. Ending grace periods narrows the mail ballot window that has historically been used at higher rates by Democrats, and Republicans believe this helps the party in competitive races.

Meanwhile, the federal government's representative at oral argument defended 🎸Mississippi's grace period, taking the opposite position from Fitch. This split between the state's Republican AG and the Biden administration illustrated how Watson divides not just by ideology but by institutional interests between state and federal authority.

The practical stakes reach beyond 🎸Mississippi. A Supreme Court ruling that federal law preempts state grace periods would invalidate existing laws in 14 states and the 🏛️District of Columbia without those states needing to pass new legislation. Election administrators in those states would face immediate compliance questions: do they stop counting ballots arriving after Election Day before a formal injunction is issued? Do they segregate late-arriving ballots pending further court order? Czarny's April 14 warning captures the administrative reality that the Court's answer will have operational consequences that don't align neatly with a late-June announcement before a November election.

The Brennan Center for Justice estimates that eliminating grace periods in all 14 states could affect up to 1.8 million mail ballots in a midterm election cycle. Conservative groups including the Heritage Foundation argue that earlier receipt deadlines improve election security and reduce uncertainty in close races. Both sides agree on the practical stakes; they disagree on whether those stakes favor or disfavor keeping grace periods.

The case tests whether courts can apply 19th-century statutes to 21st-century voting practices. Congress established the uniform Election Day in 1872 when voting was in-person only. The law says elections shall be held on the first Tuesday after the first Monday in November. RNC argues this single sentence preempts any state law allowing ballots to arrive after that date. 🎸Mississippi and 13 other states plus the 🏛️District of Columbia argue "time of election" means when citizens vote, not when election offices finish counting. The outcome will determine whether Congress must pass new legislation to protect state grace periods or whether the 1872 statute already permits them.