Missouri’s 2025 congressional map could not take effect unless voters approved it by referendum; the Missouri Supreme Court held the 2022 map remained in force for the 2026 election. Lower federal courts then ordered use of the 2025 map. The U.S. Supreme Court stayed those orders, reasoning that federal courts should not force a late election change that risks disruption under Purcell. It directed that courts not block the 2022 map or require the 2025 map for the 2026 election while the stay remains in place.