Democrats: Nominating Kamala Harris in 2020? Or Chasing The White Working Class?

On a near daily basis since 2016, we've heard networks like CNN or MSNBC talk about the failure and necessity for Democrats to court voters in the white working class. It would appear Chuck Schumer missed the mark when he predicted that each blue collar Democrat who turned their back on the party would be replaced by a white collar conservative, itching to ditch Trump. Oops.