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US Midterms 2026
7SEP

Missouri map suspended, sent to voters

3 min read
13:32UTC

The Supreme Court of Missouri suspended HB 1 on Thursday 3 September and put the map itself on the November ballot as Proposition A. Missourians will vote on those districts while standing inside the ones they were drawn to replace.

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Key takeaway

Missouri votes in November on the 2022 map while deciding whether the 2025 map ever takes effect.

The Supreme Court of Missouri suspended the state's 2025 congressional map on Thursday 3 September. Judge Ginger Gooch wrote for a unanimous court in Von Glahn v. Hoskins, No. SC101805, decided en banc, meaning by the full court rather than a panel of it. "All concur," the opinion records. The suspended act is HB 1, Missouri's 2025 congressional-redistricting law, passed by the Republican legislature to redraw the state's eight districts mid-decade.

the Court held that "because the plain language of ... the Missouri Constitution authorizes a referendum as to 'any act of the general assembly' and no exception applies, the referendum petition was legal, sufficient, and timely. This Court reverses the circuit court's judgment." 1 Article III, section 49 of the state constitution carries no redistricting carve-out. A congressional map is therefore an act of the legislature like any other, and a petition with enough signatures can suspend it until the voters have spoken.

The injunction carries the part every summary has dropped. Denny Hoskins, the secretary of state, "and all of those acting in concert with him are restrained and enjoined from implementing, using, or mandating the use of the congressional redistricting in HB 1 for the November 2026 general election or at any other time thereafter unless and until HB 1 is approved by the voters at the November 2026 general election and takes effect 30 days thereafter". 2 A struck-down map never comes back. This one does, on 3 December, if Missourians approve it as Proposition A, the ballot measure asking whether HB 1 should take effect.

November therefore runs on the 2022 map, in the Court's own words "the only map in effect". 3 Those lines were used at both the 2022 and the 2024 elections, so a reader meeting the other label elsewhere is meeting the same document under a second nickname. Missouri had already voted once under HB 1. The 4 August primary ran on its boundaries, and the Court left the results and the certified nominees alone, so a nominee chosen by one electorate now faces a different one. A three-judge federal panel had used Louisiana v. Callais in July to leave Tennessee's mid-decade redraw standing . Missouri's court has gone the other way, and it has done so after the primary rather than before it.

Deep Analysis

In plain English

Missouri redrew its congressional map in 2025 to help Republicans win a seat. State law lets voters force a public vote on a new law if enough people sign a petition fast enough, and that is exactly what happened here. Because the petition was valid, the new map lost its legal force straight away, before voters even cast a ballot on it. So the map used for this year's primary is now suspended, and the older map from 2022 will be used in November instead, unless voters approve the new one on the same ballot in a measure called Proposition A.

Deep Analysis
Root Causes

Missouri's Article III referendum clause lets a citizen petition suspend any act of the general assembly pending a public vote, and it carves out no exception for congressional maps. A bill with an emergency clause takes effect immediately and is not subject to referendum, but an emergency clause requires a supermajority the Republican majority evidently could not secure without Democratic votes.

That single structural gap, an emergency-clause threshold the majority could not clear, is why this map is the one now suspended rather than shielded from a referendum vote.

What could happen next?
  • Consequence

    Missouri's House delegation for the new term now depends on a single ballot line, Proposition A, rather than on the primaries already held under HB 1.

  • Risk

    A late Supreme Court stay reinstating HB 1 before 3 November would force a second change to district lines inside one election cycle, the disruption the Purcell principle exists to avoid.

First Reported In

Update #16 · Missouri suspends its map, and votes on it

Supreme Court of Missouri, opinion mirrored at Election Law Blog· 7 Sept 2026
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Causes and effects
Different Perspectives
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Alaska Democratic Party
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National Republican Senatorial Committee
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Supreme Court of Missouri
Supreme Court of Missouri
The unanimous court held that Article III, section 49 carries no redistricting exception, so a referendum petition against a congressional map is as valid as against any other law. It ordered the 2022 map to govern unless voters approve HB 1 on 3 November.
Denny Hoskins, Missouri Secretary of State
Denny Hoskins, Missouri Secretary of State
Hoskins told the Supreme Court that changing the congressional map after 1.2 million primary votes and ahead of the 19 September overseas-ballot deadline violates Purcell and the Elections Clause. He wants HB 1 reinstated before ballots print for November.
Senate Republican leadership
Senate Republican leadership
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