Map of counties that flipped in 2012

[GMantis]

Luna County, New Mexico is interesting. The median income there is about $27k and the county is majority Latino. Yet it voted for Romney.

Are a lot of the Latinos there old-stock Spanish-or-Mexican-Americans?

Not really, since they mostly live in northern New Mexico. As for the result, this is probably a combination of many of these Hispanics not being citizens or over 18. Add the traditional low turnout among Hispanics and the number of Hispanics who actually vote may well be in the minority.