His characteristic emotional state could really be described as "Senatorial anger," which seems to energize the Delaware politician. Biden tends to speak slowly, with gravity, out on the stump. His eyebrows knit together and lower in concern, only to be followed a moment later by a mouth turned tight with bulging anger as he discusses troops maimed and killed in Iraq. Biden can be given to moments of self-deprecating humor, when he slips into a smile. But anger seconded by disgust is what characterizes Biden emotionally as he makes a second bid for the White House.