There is a noticeable correlation between the per capita debt of a state, and whether or not the state is "Right to Work". There are 22 "Right to Work" states, and 28 "Union" states. The 7 states with the lowest debt are all "Right to Work", and the 14 states with the highest levels of debt are all "Union".
Wisconsin comes in at #12 on the worst offenders list. Even given Wisconsin's problems, they are considerably better off than the folks of Connecticut, who have almost three times the debt level.
Full stats are below, pulled from a CNN Money article.