I don't think Dems can get much worse in Palm Beach. The demographics there show high Hispanic growth and someone like Hillary or Cuomo can very likely get back above 60%. The reason the trend looks bad there is because Lieberman helped a lot in 2000 (Gore did better than Clinton ever did). Obama struggled with white upper middle class types here and other places relative to 2008. This tax deal shouldnt hurt him one bit with this group.
Even disregarding 2000 where Gore was at +14 over his national total in Palm Beach, Kerry was also at +12, while Obama '08 and '12 was at +7. The last Democratic candidate to fare worse relatively in Palm Beach was Dukakis who managed to do
worse in PB than he did nationally. But so did Mondale. And every other Democratic candidate before him going back into time immemorial. Just seems like we may be on the other side of the parabola now.