From the Pew Research Center study entitled, “Obama Weathers the Wright Storm, Clinton Faces Credibility Problem”:
White voters’ views of Barack Obama are more influenced by how he makes them feel than by specific characteristics voters attribute to him. Saying that Obama makes them feel hopeful and proud are the strongest predictors of the ratings white Democrats give him. And of the personal traits tested, “inspiring” is more closely linked with views of the Illinois senator than any of the others.