The legal battle over Missouri’s congressional district map has taken a complex turn after a federal appeals court ruled in favor of Republicans seeking to use a newly redrawn map for the upcoming general election. However, the state’s election currently remains scheduled to proceed under the previous district boundaries following the U.S. Supreme Court’s earlier decisions.

On Monday, a three-judge panel from the U.S. Court of Appeals for the Eighth Circuit—comprised of appointees by Republican presidents—found that Missouri’s plan to hold the November 2026 general election under the 2022 map violates the Constitution. The panel ordered a lower court judge to give the Supreme Court an additional week to review the matter, prolonging uncertainty about which map will govern the election.

The appeals court argued that using the redrawn map would reduce confusion among voters, as candidates have campaigned, voters have cast ballots in the recent primary, and election materials have been distributed based on the 2025 boundaries. The newly drawn districts, approved by the state legislature last year in a special session, were employed in the August primary but had not yet received final legal clearance for the general election.

Republican congressional hopefuls had challenged the use of two different maps for the primary and general elections, asserting that it would be unconstitutional to switch the lines between elections. The tussle has led to a rare and confusing scenario in which many voters will be selecting general election candidates they had no opportunity to directly nominate.

The controversy intensified after the Missouri Supreme Court ruled that a statewide referendum on the redrawn map, driven by signatures collected by the anti-redistricting group People Not Politicians Missouri, must appear on the November ballot. This ruling came after Secretary of State Denny Hoskins, a Republican, declared the map exempt from referendum, further contributing to the legal back-and-forth.

Election officials face logistical challenges amid conflicting directions. Boone County Clerk Brianna Lennon noted that ballots reflecting the older map had already been sent to overseas voters and additional absentee ballots were scheduled to be mailed imminently. She indicated that the Supreme Court would likely play a decisive role before the dispute concludes.

The redistricting fight reflects broader political stakes. The current congressional map gives Republicans six of Missouri’s eight U.S. House seats. The legislature's new districts could enable Republicans to capture a Democratic-held seat near Kansas City, potentially influencing control of the House of Representatives.

Both major parties anticipate post-election litigation regardless of which map is ultimately used. “I’m sure there will be some lawsuits,” Mr. Hoskins said recently. Meanwhile, Richard von Glahn, representing People Not Politicians Missouri, criticized the ongoing legal wrangling as a waste of taxpayer money that distracts from election administration.

As the state approaches November, the fate of Missouri’s congressional races—and the legal questions surrounding the maps—remain unsettled.