Yes, we do have historical evidence, right here in Oregon. While the rest of the nation came out of recession, Oregon could not, because we were internationally known as "Tax Hell, USA." After a lost decade running high unemployment our liberal communities finally turned to Reaganomics 101, and spent millions of dollars to develop sister city relationships with Asia, Primarily Japan. Our liberal communities offered substantial property tax relief to foreign corporations offshoring jobs to Oregon. This caused our economy to become smoking hot in the 1990's, creating more jobs than we could fill, and saw lower end wages more than double in the 90's.
 The problem with Kansas is no one wants to live there to the point Kansas will give you free land if you just move there. Tax cuts will not solve that problem. There's no work force.