General Discussion

you find the writer is parsing the argument to point toward a 'working class' that is moving left on 'issues' - while the corollary to this same observation (and probably the greater point) is that they are 'moving' significantly less - than the remainder of the country at large ... Resulting in - having them lag in relative terms farther right than a shifting center. (and clearly a Democratic party, whose favorite new watchword is 'progressive' ?)

It remains that these people largely see themselves more aligned with Donald Trump - than they do with Biden, Harris, or the Democratic party. (regardless of how you try to frame the argument, or slice the onion) And that remains the more significant point.
(in my eyes anyway)