President Trump pushed Republican states to redraw their congressional maps

Now the battle is tied up in court.

And the Supreme Court just got blindsided by this 11th-hour 2026 case.

What Missouri Built and What the State Court Just Tore Down

The story starts in September 2025, when Governor Mike Kehoe signed a new congressional map into law following a special legislative session called at the direction of Republican lawmakers responding to President Trump’s push for mid-decade redistricting.

The map, dubbed the “Missouri First Map” by its supporters, split Kansas City across three districts. Critics said that was the point — breaking up a reliably Democrat city to give Republicans a shot at flipping the 5th Congressional District, held by Democrat Representative Emanuel Cleaver. Cleaver had won his seat by nearly 24 percentage points in 2024. The redesigned 5th District was drawn so that Trump would have won it by more than 17 points in 2024.

More than 300,000 Missourians signed a petition in December 2025 seeking to put the map to a statewide vote. Republican Secretary of State Denny Hoskins waited until primary Election Day in August 2026 — the last possible moment — to reject the petition, arguing Missouri’s constitution does not authorize a referendum on congressional redistricting plans passed by the General Assembly.

That decision was challenged in court. A lower court sided with Hoskins. But the Missouri Supreme Court reversed that outcome, ruling unanimously that the referendum petition was valid and that the 2025 map was effectively suspended as of December 2025 — meaning it had never legally been in effect at all.

The problem: over 1.2 million Missourians had already voted in the August primary using that map.

Hanaway Goes to Washington

Attorney General Catherine Hanaway did not wait. She announced immediately after the ruling that she would appeal to the US Supreme Court, calling the decision a “full-fledged constitutional crisis.”

“Never before in American history has a court overturned a congressional map after a primary and before a general election,” Hanaway said.

Her office’s emergency application put the stakes plainly: “No court in American history has ever given such an extraordinary remedy, which inflicts unprecedented chaos on Missouri.”

The application also warned that the state was “genuinely unsure whether it can switch its governing congressional map in time to run a timely federal election.”

Hanaway asked the Missouri Supreme Court to pause its own ruling while the appeal proceeded. Chief Justice Brent Powell signed an order flatly rejecting that request. The state then filed its emergency application directly with the US Supreme Court late on a Friday night.

Missouri Solicitor General Louis Capozzi noted that Justice Brett Kavanaugh, who oversees emergency appeals from Missouri’s circuit, had already ordered a response — and faster than the state had anticipated. Kavanaugh directed Richard von Glahn, executive director of People Not Politicians, to file a response by noon on a federal holiday, suggesting the Court intends to move quickly. The state asked for a decision by September 13, with ballots for overseas military voters needing to go out by September 19.

Secretary of State Hoskins, whose decision to reject the referendum petition set off the entire chain of events, accompanied the application with a declaration of his own. “The Missouri Supreme Court’s decision puts the state in an impossible situation,” Hoskins said.

Capozzi’s filing argued the state court’s decision violates the rights of primary voters by changing their districts between elections and runs afoul of the Uniformed and Overseas Absentee Voter Act, which requires states to get ballots to overseas military voters 45 days before the election — a timeline the state says it cannot now meet.

What This Fight Is Really About

Republicans drew this map to protect their slim House majority. That is a legitimate constitutional exercise, and it is exactly the kind of thing state legislatures are empowered to do.

Democrats understand what is at stake. The National Democratic Redistricting Committee, chaired by former US Attorney General Eric Holder, had already filed a lawsuit in 2025 arguing the map violated Missouri’s constitution. The group People Not Politicians, led by Richard von Glahn, ran the referendum petition campaign that gathered over 300,000 signatures and ultimately gave the Missouri Supreme Court the vehicle to block the map.

And make no mistake about what the Missouri Supreme Court’s ruling actually does. Five of the seven justices on that court were appointed by Republican governors. But the court ruled unanimously that the 2025 map “is not the law and has never been the law.” That is a remarkable statement about a map that was already used in a primary election. Republican state Senator Rick Brattin won the August primary in the reshaped 5th Congressional District, which had been stretched eastward to pull in rural Republican areas. About 59% of that district’s voters were new under the revised map. Those voters cast ballots. Now the court says the map those ballots were cast under never legally existed.

The state’s emergency application captures the absurdity: it is asking the US Supreme Court to prevent a situation where Missourians vote in a November general election using a completely different map than the one used in the primary that selected the candidates they will be choosing between.

Hoskins put it directly: “We may have lost the battle today, but the war to preserve our constitutional republic is far from over.”

But Chuck Hatfield, the attorney for People Not Politicians, told reporters that Hanaway’s immediate vow to appeal was itself a violation of her duty to defend Missouri legal precedent. The state court added a footnote in its ruling calling Hanaway and Hoskins’ arguments about the practical difficulties of switching maps “wholly unpersuasive,” noting that whatever confusion resulted from the situation was largely of Hoskins’ own making since he delayed his certification decision until the last possible date.

That is the political reality underneath the legal argument. Hoskins waited until primary Election Day to reject a petition with over 300,000 signatures. He then lost in front of the state’s highest court. Now the state is asking the US Supreme Court to clean up a mess that could have been resolved months earlier.

The US Supreme Court now has to decide whether to let the 2025 map stand for November or allow Missouri to revert to the 2022 map — a 6-1 GOP-favored design, compared to the 7-1 split the new map was intended to produce. Either way, Missouri voters are heading into November with genuine uncertainty about which districts will govern their congressional races. That is not a small thing. And it did not have to happen this way.

The broader redistricting picture matters here too. Trump pushed mid-decade redistricting in roughly ten states. Most of those new maps tilted toward Republicans. California redrew its map to favor Democrats. The Missouri ruling is one of the few nationally to go against a Republican-backed plan. Whether the US Supreme Court steps in — and how fast — will signal a great deal about how the rest of the redistricting battles across the country are likely to shake out before November.

Justice Kavanaugh’s quick response to the emergency application suggests the Court is not going to sit on this. The clock is ticking.

Sources: Politico, Missouri Independent, Fox News, KCTV5, SCOTUSblog, NBC News, ABC 17 News, CBS News