Leftist Democrats are stepping up their challenge against incumbents as the party faces pressure from progressives. Thus far, Justice Democrats have announced challenges to U.S. Reps. Steve Cohen (D-Tenn. 9), Jimmy Gomez (D-Cal. 34), Shri Thanedar (D-Mich. 13), Adriano Espaillat (D-N.Y. 13), Wesley Bell (D-Mo. 1), and Diana DeGette (D-Col. 1).