Heres a story about a report that argues that Democrats have lost the votes of the white middle class.
Among the five principal findings are that white middle-income voters supported President Bush by 22 percentage points. The study concluded that the "economic tipping point -- the income level above which white voters were more likely to vote Republican than Democrat -- was $23,700."
The federal poverty guideline for a family of four is currently $19,350, so I dont think of $23,700 as middle class. Id put it this way: the moment you get out of what might reasonably be defined as poverty, you become likely, if youre white, to vote Republican.
I cant find the whole report on-line, but heres the website of the group that apparently sponsored it.