I'm less rigid about the specifics of left vs. center because I've seen Democrats of both stripes connect with the working-class by traveling different lanes that seemed appropriate for the time. It's more about messaging than ideology....and not appearing to pander to special interests or the donor class. Without getting into the specifics of Presidential primaries as is forbidden, there was a candidate whose message really connected with the working class in 2016 but really did not connect with them in 2020 simply because of a shift in focus from kitchen table issues to cultural issues.