Is Mills or Platner the "working class candidate"?

More statistical shenanigans from The Argument.

Lakshya Jain, in The Argument:

Despite his reputation as a working-class whisperer, Platner is actually doing far better with upscale Democratic whites than with non-college Democrats. Each primary poll with regional breakdowns has shown a common theme: Mills does far better among the blue-collar Democrats in the rural north of the state, while Platner c…