Must Mail-In Ballots Be Received by Election Day? Election Rule Explained

U.S. elections are governed by a mix of state and federal laws. In a recent U.S. Supreme Court case, Watson v. Republican National Committee (2026), the Court ruled that state laws allowing absentee ballots postmarked by Election Day to be received after Election Day are constitutional.

The Court’s decision in Watson clarifies the extent to which states retain the authority to administer ballot-receipt deadlines. If you have questions about voting rights or want more information on how to protect them, contact a local civil rights attorney in your area.

What Is the Election Rule?

While state law primarily determines how elections are conducted, federal law also sets election standards for states through:

• The U.S. Constitution
• Federal statutes
• Federal agency rules

The federal Election Day statutes set Election Day for Representatives, Senators, and the President on a Tuesday in November.

A related federal statute, the Uniformed and Overseas Citizens Absentee Voting Act (UOCAVA), requires states to provide absentee voting procedures for certain military and overseas voters in federal elections. UOCAVA sets specific federal requirements, such as ballot-transmission deadlines. States generally set ballot return and receipt rules unless federal law provides otherwise.

Stand Up for Your Civil Rights

If your civil rights have been violated, use the Super Lawyers directory to find the best attorneys in your area to stand up for you and your rights.

Find a lawyer today

Election Rules and the Watson v. Republican National Committee Case

In Watson v. Republican National Committee (2026), the Supreme Court ruled that the Election Day statutes do not prevent Mississippi from counting absentee ballots postmarked by Election Day but received up to five days later.

The Court reasoned that nothing in the Election Day statutes requires ballots to be received by Election Day.

Summary of the Watson Case

In 2024, the Republican National Committee (RNC), Mississippi Republican Party, and several individuals filed a lawsuit against various Mississippi state election officials. The parties argued that federal law prevents Mississippi from counting absentee ballots received after Election Day.

The Libertarian Party of Mississippi filed a similar suit. The U.S. District Court for the District of Mississippi consolidated the cases and granted summary judgment to Mississippi.

The U.S. Court of Appeals for the Fifth Circuit reversed, holding that the state’s mail-ballot statute is preempted because the federal election-day statutes require ballots to be received by Election Day. The Fifth Circuit denied rehearing and rehearing en banc before the court’s full membership, and the Supreme Court granted certiorari.

Competing Arguments in the Watson Case

Those opposing the Mississippi state law argued that a single federal Election Day requires ballots to be received by the closing of the polls, for example, by 8 p.m. on Election Day.

On the other hand, proponents of the statute assert that states retain the authority to set their own window for receiving ballots as long as they are cast on time. A “grace period” helps account for events such as mail delays, distance, and the realities of postal delivery.

The Supreme Court’s Decision in Watson

Writing for the majority (5-4), Justice Amy Coney Barrett concluded that while the law requires the electorate’s choice on Election Day, the statutes do not set a deadline for ballot receipt. So, the law does not prevent states from counting ballots postmarked on or before Election Day yet received afterward.

The majority noted that it is a fundamental canon of statutory construction that words should generally be interpreted to have their ordinary meaning at the time Congress enacted the statute.

Implications for Mail-In Ballot Policies Across States

All states require ballots to be marked and submitted by the day of the election. Twenty-nine states and D.C. allow at least some military and overseas voters to have their ballots counted after the polls close if the ballot is received after Election Day.

The ruling in Watson allows similar laws in more than a dozen states and D.C. to continue to remain on the books. Some county board of election offices may need to update procedures, voter notifications, and processing changes at the county elections office.

Do not miss the absentee-ballot application deadline, a separate but related date voters frequently miss. If a voter’s ballot is lost or damaged, they should know how to request a replacement ballot and the timeline for doing so.

Proposed Federal Legislation to Counteract Watson

In response to the Supreme Court’s Watson ruling, President Trump has urged Congress to pass the SAVE America Act, which would impose stringent voting rules, including eliminating vote-by-mail ballots with some exceptions.

The law would require individuals to provide documentary proof of U.S. citizenship when registering to vote and require photo identification to vote in federal elections. This law has the potential to override state grace-period laws.

The Watson Ruling’s Impact on Voting Accessibility

Those who are most concerned about mail-in voting options include the following:

• Military voters. Servicepeople who are deployed can face mail delays from distant or overseas posts.
• Overseas citizens. Many Americans abroad must navigate international mail timelines that can make it difficult for their ballot to reach the United States Postal Service (USPS) by Election Day.
• Elderly voters. A disproportionate number have mobility limitations or prefer not to go to the polling place in person.
• Low-income voters. Often have limited options. They may have inflexible schedules or limited transportation, preventing them from accessing early voting hours or reaching the vote centers before the polls close.

Many registered voters in these groups rely on having reliable mail-in voting options to help ensure their access to the ballot is not limited by distance, mobility, or scheduling barriers.

These voters need reliable mail-in voting options so distance, mobility, and scheduling do not limit access to the ballot.

Voting Rights and Civil Rights Consequences

This ruling is one in a long line of voting rights cases that have come before the Supreme Court in recent years. There is a balance among election integrity, broad access to voting, and measures to increase voter turnout. The decision may influence future legal challenges and legislation at the state and federal levels.

Whenever a case involving voting comes to the U.S. Supreme Court, it can have a civil rights dimension. Equality under the law requires equal access to voting regardless of geography, age, or income.

Protect Your Right To Vote

To ensure you’re prepared for Election Day to cast your vote, do the following:

• Check your voter registration status before Election Day
• Review your voter registration record to confirm that it is up to date with your name, address, and political affiliation, if any
• Confirm your polling location to ensure it has not changed, especially after redistricting or local administrative changes handled by the county board of elections
• If you are a military or overseas voter covered by UOCAVA, you can register and request an absentee ballot with the Federal Post Card Application (FPCA), or contact your local election official
• If you need to mail a ballot, submit it early. Do not wait until the polls close, and be sure to use an official drop box if your state offers one.

In some cases, you will need to cast a provisional ballot. If, for example, your eligibility cannot be determined at the polls, it’s important to know how that process works.

Get Legal Help

To get legal help for your voting rights issue, search the Super Lawyers directory to find an experienced lawyer in your area who practices civil rights law.