never seem to notice that the states with the lowest household incomes tend to be the "right to work" states.

But let's look at another metric, economic growth. Using 'Gross State Product' for 2002 and 2012
www.usgovernmentspending.com/compare_state_spending_2002pZ0a...
I calculated the economic growth over the last ten years of the 22 right to work states and the 27 other states. Indiana was excluded because it switched during this period.

                10-yr growth
Right-to-work         61%
Union shop            47%

DB2