Supreme Court's Potential Impact on Mail-In Voting Ahead of Midterms

The U.S. Supreme Court is deliberating on the case of Watson v. Republican National Committee (RNC), which could significantly alter mail-in voting practices across the United States. The case centers on a Mississippi law that permits ballots postmarked by Election Day to be counted if received within five business days afterward. The RNC argues that this law violates the 1845 Presidential Election Day Act, which mandates a single Election Day, suggesting that ballots must be received by that date to be valid.

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The Presidential Election Day Act established Election Day as the Tuesday after the first Monday in November. Historically, Congress has not intervened to prevent states from accepting ballots postmarked by Election Day but received later. This case raises questions about the interpretation of a law that has remained unchanged for nearly two centuries, with implications for similar laws in 14 other states and the District of Columbia.

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Key figures in this debate include:

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• Donald Trump, who has publicly criticized mail-in voting while promoting the SAVE America Act, which seeks to tighten voting regulations.

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• Michael Morley, an election law professor, who argues for clarity in the law's interpretation.

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• Anna Baldwin, director of voting rights litigation at the Campaign Legal Center, who supports Mississippi's law, asserting that Congress has historically allowed states to manage their ballot laws.

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• Caren Short, director of legal and research at the League of Women Voters, who emphasizes the potential negative impact on voters.

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The RNC contends that allowing ballots to be counted after Election Day undermines the integrity of the electoral process. Conversely, Baldwin argues that the historical context shows Congress has not acted against states' rights to accept late ballots. Morley highlights the need for the Supreme Court to clarify ambiguities in the law, while Short expresses concern over the disconnect between the justices and the real-world implications of their decisions.

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Critics warn that a ruling against Mississippi's law could disenfranchise voters, particularly those in rural areas or those with disabilities who rely on mail-in voting. Short argues that such a decision would disproportionately affect historically marginalized communities. Additionally, experts like Rebekah Caruthers from Fair Elections Center caution that limiting mail-in voting could lead to broader voter suppression tactics.

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While many justices appeared skeptical of the Mississippi law during oral arguments, the final decision remains uncertain. Legal experts note that a ruling could have immediate effects on the upcoming midterm elections, with potential chaos in states that have relied on grace periods for mail-in ballots.

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A decision from the Supreme Court is expected by June 2026, just months before the midterm elections. If the court rules against Mississippi's law, states will need to rapidly adjust their voting procedures, potentially leading to confusion among voters accustomed to mailing their ballots on Election Day. This ruling could set a precedent affecting mail-in voting practices nationwide, particularly as the 2028 presidential election approaches.

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• “Mail-in voting means mail-in cheating,” — Donald Trump, Former President

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• “If Congress had wanted to make a change, where you would’ve expected them to say something about that, it would have been in Electoral Account Reform Act,” — Anna Baldwin, Campaign Legal Center

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• “This isn’t just a singular action that’s not going to have a ripple effect,” — Rebekah Caruthers, Fair Elections Center

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The Supreme Court's ruling on this case will likely have far-reaching consequences for mail-in voting, shaping the electoral landscape for years to come.

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