Wage resentments may have played a role Gregor. It is a very real thing that management class types have used to denigrate unions. Weakening unions has been an avocation of the rich since organized labor reemergence in the 1930's. It's been a multigenerational project for some families, such as the koch's. Shifting production from areas of high union organization and leftist politics to low unionization, if any at all, and relatively little left wing political thought began in the 50's. Meat packing moved out of the Midwest and furniture making moved out of New England. Similar legal efforts were made to curtail and restrict the ability of organizing work places in the south and, as the Koch project is still unfolding, the upper Midwest as well. The south has made sense for using as a cheap labor pool. After all, it fought a horrendous war using poor laborers that were defending an economic system to keep them poor. Except for the farm revolts and cigar worker strikes I can't think of much labor solidarity in the south. I do recall a more negative attitude towards unions while living there so you may be right on resentments helping pass 'right to work' anti labor organizing laws. The Democratic Party is incapable of reforming itsrlf and making a left turn. It's only going to happen with pressure from below. You don't get left policies by electing republicans in a Democat wrapper such as Beto. His voting record is what's wrong with the party and voters that can't differentiate between public relations and voting/donation history.