62% of white men voted for Romney...

[pampango]

39. 90 per cent of white voters (95% of white men) in Mississippi voted for Romney.

Interesting Australian look at diversity among US whites: ‘Southern White’ as an ethnicity

‘Southern White’ as an ethnicity

A while ago, I posted about the supposed capture of the ‘white working class’ by Republicans, pointing out that the term was being used to refer to those with less than college education. On more traditional measures of class, such as income, the Democrats do much better, though still getting only about half the vote.

In response to this post a number of commenters pointed out that the data was not disaggregated by region, and that the South was anomalous. A couple of things I’ve seen recently support this. Here’s Charles Blow, reporting that 90 per cent of white voters in Mississippi supported Romney. Kevin Drum observes that Obama won about 49 percent of the white vote outside the South and 27 percent of the white vote in the South.

It strikes me that the best way to understand the distinctive characteristics of US voting patterns is to to treat “Southern White ” as an ethnicity, like Hispanic. With that classification each of the major parties becomes an coalition between a solid bloc vote from an ethnic minority and around half the votes of the “non-Southern white” ethnic majority, which is more likely to vote on class lines. The question then is which ethnic/class coalition is bigger. As in other countries, voting for the more rightwing party is correlated, though not perfectly with higher incomes and (conditional on income) lower education, and to shift according to broader ideological movements.

In the meantime, the demographic trends are favorable. The ethnic population balance is shifting from White Southerners to Blacks, Hispanics and Asians. So, as long as this alignment remains stable and the Democrats continue to gain ground with younger voters in general, the odds shift in their favor.

http://crookedtimber.org/2012/11/16/southern-white-as-an-ethnicity/

I'm not sure about the issue of the age of white male voters but you are right about the difference between white voters in the South and elsewhere.