A. The right of an American- every citizen has the “right” to vote according to personal values, if he so chooses.
B. Some individuals may feel that certain “values” are what is “good for America”. You may feel otherwise, and that is your right as well.
I realize you’re very excited about Obama, and therefore suggest that you employ a greater level of sophistication in a dialogue on this topic. Perhaps try to highlight your candidate’s strengths or previous accomplishments.