I don’t know if this will help but here it is.
http://survivalandprosperity.com/2011/04/13/democrats-or-republicans-better-for-economy/
So newbie, you link to an uber-leftist-skewed study by a couple of uber-leftist professors spinning their predictable convoluted pro-socialist garble yarn as your helpful source here for why liberal policies are ruinously destructive and at its essence anti-American??? Nice work!