Missouri Supreme Court blocks new congressional map, orders referendum

The Wire: The Missouri Supreme Court unanimously ruled Sept. 3 that the state's Republican-drawn congressional map cannot be used in November and ordered it placed before voters in a statewide referendum, restoring the 2022 lines for the midterms.

Why it counts: The decision preserves Democratic Rep. Emanuel Cleaver's Kansas City seat and foils a Trump-backed effort to shift Missouri's delegation from 6-2 Republican to 7-1. With the U.S. House majority resting on a handful of seats, one Missouri district carries national weight.

The margin: All seven justices, five of them Republican appointees, agreed the map must go before voters. The referendum reached the ballot on the strength of more than 305,000 signatures gathered by the group People Not Politicians. The blocked map would have carved up Cleaver's 5th District, which he has held since 2005.

The fine print: The path was tangled. Secretary of State Denny Hoskins rejected the referendum in early August, and a lower court agreed. Still, the Supreme Court reversed, holding that the state constitution's list of measures shielded from referendum does not include congressional redistricting. Because the petition qualified, the 2025 map was suspended and never took effect, so Missouri's August primaries ran under the new lines while November's general election reverts to the 2022 map.

On the record: Cleaver celebrated the outcome, writing that Missourians "fought back and won" and declaring that "democracy prevails."

The counter: Attorney General Catherine Hanaway said she will seek immediate relief from the U.S. Supreme Court, arguing the federal Constitution gives state legislatures authority over congressional redistricting. She called the ruling unprecedented, warning it "thrust our state into a full-fledged constitutional crisis" by overturning a map between a primary and a general election.

The backdrop: The fight is one front in a mid-decade redistricting war that began when Trump urged Republican states to redraw lines to protect the House majority. Missouri lawmakers passed the new map last fall under that pressure, part of a national push in which Republicans improved their standing in 16 districts, including Cleaver's, while Democratic states such as Maryland countered with maps of their own.

Looking ahead: Hanaway's emergency appeal now goes to the U.S. Supreme Court, which could act quickly given the calendar. Absent intervention, voters decide the map's fate Nov. 3 on the same ballot they use to elect a House delegation under the old lines. Approval would clear the Republican map for future elections, while rejection would end the effort to unseat Cleaver.