What other choice do they have? Bobo dismantled the DNC; he defunded anything to do with Bubba's Third Way; he literally destroyed Steny's Blue Dog complement via the Obamacare vote; he demanded fealty from every DC mandarin and those that did not comply, he authorized shadow orgs with full orc complements to every standing Democrat neo-governmental 501(c)(3).
"If the Left is focused on race and identity, and we go with economic nationalism, we can crush the Democrats."
You think the Left is pizzed now, wait until Wednesday, Nov. 7, 2018, when they wake up to 5 more GOP Senate seats and minimal (>6) House gains.