The interactive surface depicts the regression plane in which information CPS (X-axis, centred) and constituency-based CPS (Y-axis, centred) jointly predict firms’ reputation (Z-axis) using the Finsaas and Goldstein (2020) procedure . Regions of significance are super-imposed: the blue-to-white gradient highlights where the simple slope of constituency CPS on reputation is significant across the information-CPS range (Johnson–Neyman test), while the solid green bands mark the corresponding region for the information-CPS slope across constituency CPS. The grey line running across the surface traces the crossover point at which the constituency-based effect flips sign. Together, the plot shows that reputation gains are strongest when both political strategies are deployed at moderate-to-high levels, whereas either tactic in isolation delivers little benefit.