-Vice President Joe Biden leads in nearly every national poll.
-The former vice president's critics, though, question what his actual accomplishments are.
-He's been in politics for 40 years....
Wanting to know if Democrat voters could disprove this line of attack, Campus Reform's Cabot Phillips headed to Detroit, home of the second Democrat presidential primary debates, to talk with debate attendees about their thoughts on Biden and what they viewed as his main accomplishment.
It soon became clear that few voters had an answer.