Why did the Missouri Supreme Court throw out the Republican congressional map?

If you mean the map Missouri adopted for the 2022 elections, the Missouri Supreme Court did not throw it out. The court upheld the Republican-drawn map after opponents argued that it violated the state constitution’s rules for drawing congressional districts.

The challenge focused on claims that the districts were not sufficiently compact and that the map unfairly split communities, including parts of the Kansas City area. The court rejected the challenge, so the map remained in place.

There have been later disputes over Missouri congressional maps, so a newer headline may be referring to a different map or a separate court action. If you share the article or ruling date, it’s possible to pin down exactly what the court decided.