The race to fill Thurman Adams' Senate seat was much more complicated than that. His daughter's loss to the Republican House member was more of a backlash against the Dem powers that be for playing dirty pool than anything to do with a backlash against Obama. The Bridgeville area is pretty conservative, as was Thurman.
Another example is the win of Marilinda Garcia, in a special election for the NH state house, and perhaps also Jeb Bradley for NH state senate.