Patty Murray will fight him for the "dumbest" title (and win), but Durbin is - as of last night - the "Senator Most Likely to Get American Troops Needlessly Killed Because of Political Grandstanding." I expect to see Ted Kennedy trying to retake that crown shortly.
I agree with Edskid. Patty Murray retired the title long ago. Her colleague Maria Cant-count-well holds the title, "Senate's most invisible member."