White Vote by Income, 2012

I don’t know about every state; but here is the picture for the Non-South and South, based on survey data from the 2012 Cooperative Campaign Analysis Project. The lowest income category is less than $10,000; the highest is $150,000 and up. The overall correlation between income and Democratic support is negative, but Obama’s voter share is higher in the top income groups than among the upper middle class. (That very low Obama share for the lowest income group in the South is based on 196 survey respondents; the other cell sizes range from 285 to 1420.)

White Vote by Income, 2012