Contentions talks about Sunday's Meet the Press, where Pennsylvania Democrat Joe Sestak was asked if he were an "Obama Democrat."
His answer was long and rambling and no answer at all.
Creigh Deeds stumbled into that trap in September. Democrats have had several months to learn how to answer the question.
Not a good sign that there's no simple answer to that simple question. One that voters will be asking plenty of times between now and November.