One of my aunts is a teacher and very active in her union. She's almost as liberal as I am conservative and has never voted for a Republican for president (except possibly McCain in 2008). But she never liked Obama much, and I think she may have even voted for McCain. But even if she did, I think she voted for Obama last time.
On the other hand, you have my other aunt, who voted for every Democrat from Mondale to Gore (inclusive), but voted for McCain and Romney, as well as Bush in 2004. I can't make any generalizations from them, though, because they were becoming more Republican as the rest of the country is becoming more Democrat.
Was the first aunt a PUMA?