From
Online News Hour & WBUR.org linked through pbs.org.
The quiz is blind, with actual candidate issue statements. 14 questions and the candidate's answers without identifying which candidate said what.
I did spend some time trying to figure it out (who said what) but then went with what seemed either reasonable or familiar...
Not surprisingly, I scored highest with my man Howie...but, I was surprised that I had at least one issue that fell to all of the other candidates but Clark.