HB 1
Missouri's 2025 congressional-redistricting act, suspended pending a November 2026 referendum.
On 21 September, the Eighth Circuit ordered Missouri to use HB 1 for its November election, then paused that order until 28 September.
Last refreshed: 24 September 2026 · Appears in 1 active topic
Will Missouri voters approve HB 1's congressional map in November?
Timeline for HB 1
8th Circuit puts Missouri on 2025 map
US Midterms 2026Candidates certified on a discarded map
US Midterms 2026Mentioned in: Supreme Court stays the Missouri TRO
US Midterms 2026suspended redistricting law at the centre of the breach
US Midterms 2026: Court finds Hoskins in civil contemptFederal judge orders HB 1 back into use
US Midterms 2026Background
HB 1 is Missouri's 2025 congressional-redistricting act. It redraws the state's eight United States House districts through a mid-decade state legislative map.
Its lasting importance lies in the route by which a state map can be halted and put before voters. Missouri's Supreme Court suspended HB 1 on 3 September 2026 after finding that a valid referendum petition had stripped the act of effect.
The act has since become a test case in election administration as courts issue conflicting directions about which district boundaries Missouri must use. A federal order on 8 September and an appellate order on 21 September each sought to restore HB 1, while later stays kept its status contested.
HB 1 remains legally contested
On 21 September, the Eighth Circuit directed Missouri to use HB 1's district map for the November election. It then paused its own order until 28 September, leaving the act's immediate effect unresolved.
The uncertainty follows competing orders over HB 1 during September. A federal judge ordered the map back into use on 8 September, while Missouri's Supreme Court had suspended it after a referendum petition. The dispute matters to HB 1 because its district boundaries underpin candidate certification and ballot administration.