Supreme Court rulings reshape US midterm election landscape
Mail-in ballots and campaign finance: A pivotal week for election law
The Supreme Court issued two landmark rulings in the final days of its term that will directly impact the 2026 United States midterm elections. On Monday, the court ruled 5-4 that states may count mail-in ballots that arrive after Election Day as long as they are postmarked by the deadline. The decision, authored by Justice Amy Coney Barrett, rejected a Republican National Committee challenge and upheld laws in 14 states, including Mississippi, California, New York, and Texas.
Justice Samuel Alito wrote the dissent, arguing that the majority relied on a “flawed understanding of the election-day statutes.” President Donald Trump called the ruling a “tremendous loss” on Truth Social and renewed his call for Congress to pass the SAVE America Act, which would require photo ID, proof of citizenship, and ban most mail-in voting.
Just one day later, the court struck down a 50-year-old limit on coordinated campaign spending between political parties and candidates. In a 6-3 decision, the conservative majority ruled that the cap violated the First Amendment. The case originated from a Republican-led lawsuit involving now-Vice President JD Vance. The ruling overrules a 2001 precedent and removes a key provision of the Federal Election Campaign Act of 1971, potentially unleashing a flood of party-candidate coordinated spending ahead of November.
Together, the decisions reshape the legal framework for the midterms, affecting everything from how votes are counted to how campaigns are financed.
Why it matters: Control of Congress hangs in the balance
A fiercely competitive fight for the House and Senate
The midterm elections will determine control of both chambers of Congress. Republicans currently hold narrow majorities, but Democrats are hoping to flip seats in a political environment shaped by President Trump’s return to the White House and his aggressive use of executive power. The Supreme Court’s mail-ballot ruling ensures that thousands of votes that arrive after Election Day—a small but potentially decisive slice of the electorate—will be counted. In 2024, hundreds of thousands of such ballots were cast nationwide.
The campaign finance decision could further amplify the role of super PACs and party committees, allowing them to coordinate directly with candidates on spending. This may benefit well-funded incumbents and candidates backed by national party infrastructure, but it also opens the door to new attacks on perceived corruption.
Key primaries set the stage
The impact of these rulings will be tested in competitive primaries already underway. In Colorado, Democratic voters will choose between Senator Michael Bennet and Attorney General Phil Weiser for governor in a primary that could reshuffle the state’s Senate seat. Bennet, if elected governor, would appoint his own replacement, potentially keeping a Democrat in the Senate. Republicans hope to win back the governor’s mansion with a field led by pastor Victor Marx.
In Alaska, a quirky legal battle saw a judge rule that both incumbent Republican Senator Dan Sullivan and a challenger with the exact same name—former Forest Service worker Dan Sullivan—can appear on the August 18 primary ballot. The state’s non-partisan primary system allows the top four candidates to advance, making vote-splitting a real concern. Republicans plan to appeal.
These races will test how the new legal landscape affects voter turnout, ballot access, and campaign strategy.
Perspective: A transformed election landscape
What the rulings change—and what they don’t
The mail-ballot decision avoids an election-year upheaval that could have disenfranchised military and overseas voters, who rely on extended deadlines in 29 states. But it also ensures that the debate over voting by mail will remain central to campaign messaging. Trump and his allies continue to allege fraud without evidence, and the decision may energize both those seeking to expand and restrict ballot access.
The campaign finance ruling marks the latest chapter in the Supreme Court’s steady deregulation of money in politics, following Citizens United in 2010 and other decisions. Critics argue that allowing unlimited coordinated spending will increase the influence of wealthy donors and party insiders, while weakening anti-corruption safeguards. Supporters say it levels the playing field and upholds free speech.
Trends to watch
As the midterms approach, expect a surge in party-coordinated advertising and get-out-the-vote efforts, especially in swing states. The mail-ballot decision may also prompt legislative battles in states that currently bar late-arriving ballots. Meanwhile, the Biden administration’s Department of Homeland Security has faced backlash over election-related grants and immigration rule changes, adding another layer of controversy (see related coverage: DHS Faces Backlash Over Election Grants, Immigration Rule, and Iran World Cup Policy).
With control of Congress in the balance, the Supreme Court’s twin rulings have set the stage for a high-stakes, high-spending, and highly litigated election season. Voters and candidates alike are now navigating a system that has changed dramatically in just 48 hours.
For more on the intersection of sports and politics, see our coverage of the Western States 100 2026: Kilian Jornet and Jim Walmsley Lead Star-Studded Field.
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