Lane Kenworthy, Yu-Sung Su, and I write:
Income inequality in the United States has risen during the past several decades. Has this produced an increase in partisan voting differences between rich and poor? We examine trends from the 1940s through the 2000s in the country as a whole and in the states. We find no clear relation between income inequality and class-based voting.
This article will appear in a special issue of Social Science Quarterly on the topic of “Inequality and Poverty: American and International Perspectives.” We have some pretty graphs, some of which appeared in the Red State, Blue State book and some of which didn’t.
P.S. “We find no clear relation . . .”: That works great in an academic article but I don’t think we’ll be grabbing the headlines anytime soon.
Jim Manzi found that inequality was linked to voting Democrat here:
http://theamericanscene.com/2008/09/15/do-more-un…
What about income inequality and polarization?