With the 2026 U.S. midterm elections approaching, attention is turning to what could happen if some of the closest races end in legal disputes.
While state officials conduct and certify federal elections, the U.S. Constitution gives the House of Representatives and Senate the authority to judge the elections and qualifications of their own members.
That power could become important if a small number of contested races determine which party controls Congress.
Republicans currently hold narrow majorities in both chambers. Democrats are hoping to win enough seats to take control, making every competitive race particularly important.
Why Congress Has the Final Say
Under the U.S. Constitution, each chamber of Congress has the authority to determine whether its members were properly elected.
This means that even after state officials certify an election result, a losing candidate can still challenge the outcome through established procedures.
In the House, a candidate who loses can file a challenge under the Federal Contested Election Act. The House Administration Committee reviews the case and can recommend which candidate should take the seat.
Senate election disputes follow a different process. Challenges go to the Senate Rules Committee, which examines the matter before making a recommendation to the full chamber.
Ultimately, members of each chamber decide who should be seated.
Why the 2026 Elections Could Be Different
The possibility of contested results matters because Republicans currently control both chambers by slim margins.
According to Reuters, Democrats would need a net gain of four seats in each chamber to take control.
If several races are extremely close, recounts and court challenges could delay the final outcome.
Some disputes could continue even after the new Congress begins in January. In the House, unresolved contests would be handled by the newly elected chamber rather than the outgoing one.
This could create complications when lawmakers are trying to organize the House and elect a speaker.
Previous Elections Show How Long Disputes Can Last
The United States has dealt with contested congressional elections throughout its history.
One notable example was the 2008 Minnesota Senate race between Democrat Al Franken and Republican Norm Coleman.
The result went through a lengthy legal battle before Franken was declared the winner in July 2009, about six months after the Senate term had begun.
Another dispute occurred in New Hampshire following the 1974 Senate election.
Separate recounts produced different winners, and the Senate could not resolve the disagreement. Lawmakers eventually declared the seat vacant, leading to a special election in 1975.
These cases show that election disputes can continue long after voters have cast their ballots.
Political Tensions Could Make Disputes More Complicated
Election experts say partisan interests could influence how lawmakers respond to contested results.
If one party believes a disputed seat could affect control of Congress, its members may have strong political reasons to challenge the outcome.
However, experts have also cautioned against assuming that every close election will lead to a major constitutional crisis.
The process has legal procedures, and candidates must pursue challenges through the appropriate channels.
Reuters reported that the House has handled 634 contested elections since the first Congress met in 1789.
What This Means for the Midterm Elections
The November 3 elections will determine more than the next composition of Congress. They could also test how the country’s election dispute procedures operate in a closely divided political environment.
With both parties fighting to control the House and Senate, even a handful of unresolved races could become politically significant.
For now, voters will have to wait for election results. But if the margins are narrow enough, some of the biggest decisions may come after Election Day, inside Congress itself.