Here are GDP series for Wisconsin, as compared to Minnesota and the Nation, normalized to 2011Q1 when Governor Walker took office. I’ve indicated the implementation of the Manufacturing and Agriculture Credit, and percentages, as well.
Figure 1: Log real GDP for Minnesota (blue), for Wisconsin (red) and US (black), all normalized to 2011Q1=0. Implementation of Wisconsin Manufacturing and Agriculture Credit (MAC) shown in orange shading, with size of credit indicated by darkness (percentage of credit in brown text). NBER defined recession dates shaded gray. Source: BEA, NBER, and author’s calculations.