Missouri’s congressional elections have been thrown into extraordinary uncertainty after the state’s Republican attorney general turned to the U.S. Supreme Court in a last-minute battle over which political map voters will use in November.

Attorney General Catherine Hanaway is seeking emergency intervention after the Missouri Supreme Court blocked the state’s newly drawn congressional districts from being used in the 2026 midterms.

Hanaway attacked the state court’s reasoning as a “legal fiction” and warned U.S. Supreme Court Justice Brett Kavanaugh that “a federal-election-administration disaster is unfolding in Missouri.”

But one prominent local political journalist says the attorney general’s own position could produce something even more alarming: “absolute chaos.”

Two maps—and one rapidly approaching election

At the heart of the confrontation are two competing congressional maps.

The first is the map Missouri used beginning in 2022. Under those boundaries, Republicans are favored in six of the state’s eight congressional districts.

The second map was drawn by Missouri Republicans in 2025 with President Donald Trump’s support. It would likely give the GOP a 7-1 advantage by dismantling the Kansas City-based district represented by longtime Democratic Rep. Emanuel Cleaver.

Opponents collected signatures to force a referendum on the Republican map. The Missouri Supreme Court subsequently ruled that the referendum prevented the new boundaries from taking effect before voters had their say.

The court ordered the November elections to proceed under the previous map.

Hanaway is now asking the U.S. Supreme Court to stop that ruling, creating a high-stakes federal dispute just as Missouri officials face critical ballot deadlines.

Attorney general attacks ‘legal fiction’

Hanaway filed her emergency request with the nation’s highest court on Friday, September 4.

Her argument challenges the Missouri Supreme Court’s conclusion that placing the 2025 map before voters automatically requires officials to return to the earlier congressional boundaries.

She characterized that interpretation as legally unfounded and warned that election administrators could be forced to make disruptive changes with almost no time remaining.

Tuesday, September 8, was reportedly the deadline for altering Missouri’s November 3 ballot. Justice Kavanaugh asked the other parties in the dispute to respond to the emergency application.

Hanaway’s filing argues that anyone seeking permission to implement the disputed 2025 map despite Missouri law would need more than a temporary stay. They would need a federal injunction expressly authorizing the secretary of state to use it.

The procedural distinction may sound technical, but the consequences could determine the composition of Missouri’s congressional delegation—and possibly affect the fight for control of the U.S. House.

Warning of ‘absolute chaos’

Mark Maxwell, political editor at St. Louis television station KSDK, raised the alarm after examining Hanaway’s latest court filing.

He said the attorney general appeared to suggest that local election officials might proceed under the disputed “Missouri First” map even though the Missouri Supreme Court had explicitly prohibited its use.

Such a move, Maxwell warned, would create “absolute chaos.”

Election administrators could face contradictory instructions from state officials and the courts. Candidates might not know with certainty which districts they are contesting. Some voters could receive ballots based on boundaries later declared invalid.

And any election conducted under a legally disputed map could trigger further lawsuits challenging the legitimacy of the results.

Hanaway has framed her intervention as an attempt to prevent administrative disaster. Her critics see the filing as an effort to rescue a Republican gerrymander that Missouri’s highest court has already stopped.

Cleaver’s district hangs in the balance

The political stakes are enormous for Rep. Emanuel Cleaver and Democratic voters in Kansas City.

The 2025 map would restructure Cleaver’s district in a way expected to make it much harder for Democrats to retain the seat. Republicans would enter the election with a realistic chance of winning seven of Missouri’s eight congressional districts.

The Missouri Supreme Court did not permanently invalidate the proposal. Instead, it ruled that voters must be allowed to decide its future through the referendum process—and that the state must use the existing boundaries in the meantime.

That ruling placed the court squarely between Missouri Republicans and a redistricting plan backed by Trump.

Now, the U.S. Supreme Court is being asked to intervene on an emergency basis, potentially overriding how Missouri’s own highest court interpreted state election law.

Powerful legal groups join the fight

The dispute has attracted major organizations on both sides.

The American Civil Liberties Union and Campaign Legal Center filed a supporting brief for People Not Politicians, the group opposing immediate use of the Republican map.

On the other side, the conservative American Center for Law and Justice filed a brief supporting Missouri Secretary of State Denny Hoskins.

The battle is also unfolding in federal court in St. Louis. Republican Rep. Bob Onder, state Sen. Rick Brattin and two voters filed a separate lawsuit, while People Not Politicians is attempting to intervene and have that case dismissed.

A decision that could reach far beyond Missouri

The controversy is about more than district boundaries. It tests whether state officials can turn to federal courts when they reject their own state supreme court’s interpretation of election law.

It also raises a destabilizing question weeks before voting begins: What happens when political officials, election administrators and courts cannot agree on which map governs an election?

Missouri’s voters currently face two sets of congressional boundaries, multiple lawsuits and an attorney general warning of disaster while challenging an order from the state’s highest court.

One of those maps could help Republicans secure an additional seat in Congress. The other preserves the political landscape Missouri has used since 2022.

But unless the courts deliver a rapid and unmistakable answer, the fight over who benefits from Missouri’s map could leave voters wondering whether the boundaries—and potentially the results themselves—will still be valid after their ballots are cast.