"you find that 80%+ of them hold highly regressive views"

Question is, does this info come from reputable pollsters? Or is it just a factoid propagated by right-wing media?

Also, impossible to square with a conservative white base *also* holding similarly regressive views. (Speaking from a US perspective, not a Euro one, but the same people yelling about regressive immigrants are also genuinely trying to disenfranchise women in favor of male-headed family units, and other things in this vein.)