Cori Bush, who features in "Knock Down the House," about progressives who ran for Congress in 2018, canvasses in St Louis, Missouri, Monday. Photo: Michael B. Thomas/Getty Images
Why it matters: She'd be the first Black Congress member to represent Missouri if she were elected to the House in November, per the New York Times. Clay, who's been in office for nearly 20 years, beat Bush in 2018. The former homeless woman, now a nurse and ordained pastor, led protests in Ferguson, Missouri, over the 2014 fatal police shooting of Black teen Michael Brown. Bush was endorsed by Sen. Bernie Sanders (I-Vt.) and Rep. Alexandria Ocasio-Cortez (D-N.Y.).
Editor's note: This article has been updated with new details throughout.