The Supreme Court is poised to hear a challenge to a Mississippi law that allows for a grace period for mail-in ballots, where mail ballots sent by Election Day are counted if they arrive within a few days after Election Day. If the Court rules against Mississippi’s law, it would effectively end grace periods across 30 states, some of which were specifically designed to protect military and other overseas voters.
Filed on behalf of over 50 individual retired military leaders and diplomats, as well as eight organizations that represent military voters, military family member voters, and U.S. citizens living overseas, this friend-of-the-court brief explains why these laws are so important.
Background
In 2024, the Republican National Committee, Mississippi Republican Party, and Libertarian Party of Mississippi alleged that the Mississippi law is preempted by federal “Election Day” laws that require all states to have presidential and congressional elections on the first Tuesday of November. But these laws, enacted over a century ago, say nothing about when states must receive valid mail ballots. To the contrary, they only cover the day by which votes must be cast. There is a long history of states counting votes, especially military and overseas votes, that arrive after Election Day. A federal district court ruled against the challenge, but a panel of the U.S. Court of Appeals for the Fifth Circuit reversed and ruled in favor of the plaintiffs. The Supreme Court agreed to hear the case.
The Brief
Representing individual retired defense officials, military leaders, and diplomats, the Association of Americans Resident Overseas, Blue Star Families, the Chamberlain Network, the Federation of American Women’s Clubs Overseas, Secure Families Initiative, U.S. Vote Foundation, Veterans for All Voters, and We the Veterans and Military Families, the Brennan Center for Justice and the law firm Covington & Burling LLP filed a friend-of-the-court brief that highlights two points.
First, state grace periods help address the barriers that military and civilian overseas U.S. citizens face when it comes to voting. These voters might be deployed in a faraway combat zone or in a different state, or studying, working, preaching, or serving as a diplomat abroad. That means mailing a ballot is often the only way to exercise their right to vote. Since before the Civil War, states have developed voting processes like grace periods to accommodate the needs of military voters, their families, and other Americans living away from home. It would be egregious to now make it harder for them to vote.
Second, the argument for invalidating these state laws ignores that while Congress may preempt certain state election laws, it has consistently deferred to states when it comes to setting grace periods for receiving ballots. The brief walks through a number of federal laws, including the Uniformed and Overseas Citizens Absentee Voting Act of 1986, that facilitate military and overseas voting. By and large, Congress has incorporated states’ deadlines for receiving ballots into these laws rather than replace them.
Additional Friend-of-the-Court Briefs
Over a dozen other government entities, election officials, nonprofits, and legal scholars submitted friend-of-the-court briefs in support of Mississippi’s law. The briefs covered topics including textual and historical arguments favoring the law, as well as the practical effects for voters of color, voters with disabilities, and election officials.
Case Updates
- January 9, 2026: Amicus briefs. Individuals and organizations representing military and overseas voters, along with over a dozen other amici, file briefs in support of Mississippi’s law.
- Amicus brief of Individuals and Organizations Representing Military and Overseas Voters
- Amicus brief of National Security Leaders for America
- Amicus brief of National Defense Committee
- Amicus brief of Lawyers’ Committee For Civil Rights Under Law, NAACP Legal Defense And Education Fund, Asian American Legal Defense And Education Fund, Equal Justice Society, National Urban League, NAACP, And Mississippi State Conference of the NAACP
- Amicus brief of League of Women Voters, Rural Coalition/Coalición Rural, Center for Rural Strategies, American Association of People With Disabilities, and Disability Rights Mississippi
- Amicus brief of League of United Latin American Citizens
- Amicus brief of National Congress of American Indians, Alaska Federation of Natives, and Washington Conservation Action Education Fund
- Amicus brief of the District of Columbia and 19 States
- Amicus brief of the State of Alaska
- Amicus brief of local election officials and local governments
- Amicus brief of Former Election Administrators
- Amicus brief of The Society for the Rule of Law Institute
- Amicus brief of Constitutional Accountability Center
- Amicus brief of Professor Michael T. Morley and the Florida State University Election Law Center