On March 5, supporters of a Missouri referendum concerning U.S. House districts said data from the various county election offices shows they have enough valid signatures statewide and also in five of the eight U.S. House districts. They need enough valid signatures in any six U.S. House districts. See this story.
If the Secretary of State would acknowledge this data, then the old districts would be in effect in the 2026 election. However, he does not.