DK: I do appreciate what you did Desmond. But, I will be a little bit honest on this answer. Since the variable, income, has two coefficeints, it is hard to directly go & interpreate what -0.0535 means. This applies to dem too. Rather than interpreting each coefficient, I think we can directly go & answer the question. dem is dummy. When dem =1, the effect of dem becomes 10.50 + 0.07*income. Which means the effect of being democrats on feeling toward Obama is a positive function of income. Since we are dealing with interaction term, the effect of being non-demoratcs on feeling towrad obama has the negative function of income. I am not sure what Solt means with "less influeced," but I am sure that income has positve influeces on how democrats feel about Obama.