GenXers sure don't like Hilldog
It is an interesting question as to why Hillary does so much better than Obama with the olds but poorer with the GenXers. Could it simply be identity politics. Obama is seen as a Gen Xer and Hillary is a fellow old?
It's hard to tell how Obama did with Gen X. The '12 exit polls have different age splits, with Gen X spread between 30-44-year-olds (Obama by 7) and 45-64-year-olds (Romney by 4). I think there's split within Gen X itself, in that older members of that age bloc were some of the youngest Reagan voters, while younger members were big Clinton backers.