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Missouri Supreme Court blocks new congressional map, sends it to voters

Missouri Supreme Court blocks new congressional map, sends it to voters

Rule Changes

2022 districts stay for November election while voters decide the map's fate

Today: Court denies stay; Hoskins prepares U.S. Supreme Court appeal

Overview

Updated 36 minutes ago

Missouri's Supreme Court unanimously blocked a Republican-drawn congressional map on September 3. The court restored the state's 2022 districts for the November election and put the new map on the statewide ballot as Proposition A.

The ruling overturns Secretary of State Denny Hoskins' rejection of a referendum petition backed by over 300,000 signatures. Under Missouri's constitution, a certified referendum suspends the law until voters decide. Republicans drew the new boundaries to add a House seat, and the ruling undercuts that plan.

Why it matters

The map was designed to hand Republicans another House seat in a nearly even chamber, and Missouri voters could kill it on November 3.

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Key Indicators

300,000+
Petition signatures challenging the new map
Submitted December 9, 2025, before the law's effective date, suspending it.
1.2M
Voters who cast ballots in Missouri's August primary
Voted under the new map that the court has since blocked. Figure cited in Hoskins' emergency filing.
1922
Last year Missouri voters weighed a congressional map
The November referendum is the first of its kind in over a century.

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People Involved

Organizations Involved

Timeline

September 2025 September 2026

5 events Latest: Today
Tap a bar to jump to that date
  1. Missouri legislature passes new congressional map

    Legislation

    Republican lawmakers passed House Bill 1 in a special session, redrawing the state's congressional districts.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

November 1922

Missouri's last congressional map referendum (1922)

Missouri voters last had a direct say on a congressional map in 1922, when voters were asked to approve or reject a legislatively drawn plan. That election established the precedent that redistricting laws could be challenged by referendum.

Then

The 1922 vote set the expectation that Missouri voters could weigh in on redistricting, though no similar referendum reached the ballot for more than a century.

Now

The precedent faded from institutional memory until this week, when the state Supreme Court revived it.

Why this matters now

The November vote is the first time since 1922 that Missouri voters will directly decide a congressional map.

June 2023

Moore v. Harper (2023)

The U.S. Supreme Court rejected the independent state legislature theory, holding that state constitutions and state courts can constrain how legislatures draw congressional maps.

Then

The decision preserved state court oversight of congressional redistricting.

Now

It affirmed that state-level rules apply to federal elections, the legal foundation for Missouri's referendum challenge.

Why this matters now

Missouri's referendum mechanism relies on this principle: state constitutional provisions governing redistricting remain enforceable.

November 2024

Ohio Issue 1 (2024)

Ohio voters approved a constitutional amendment creating an independent redistricting commission, replacing the politician-led commission that had produced maps repeatedly struck down by courts.

Then

Map-drawing authority shifted from elected officials to a citizen commission.

Now

The measure reflects a wave of voter-led redistricting reform attempts across the country.

Why this matters now

Ohio and Missouri show voters pushing back on legislative control of congressional maps through different mechanisms: constitutional amendment in Ohio, referendum in Missouri.

Sources

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