By the mere action of being member of a union shows that they have little to no self respect. The fact is that unionists are far greater thugs and money grubbers than members of the business community could ever consider being. unlike Unions businesses can not force anybody into buying anything.
The problem being is that in states such as mine, you often HAVE to join a union as condition of employment.
Nevertheless, the Teamsters, SEIU, and the Healthcare (nurses and orderlies) unions are always out canvassing for Dem candidates around here.