No, he's answering the Illinois Republicans' call for help. Hillary, in contrast, came in because she was on a power trip - - she pushed people aside so she could claim the prize. The situations couldn't be more different.
You and I are in disagreement. Alan Keyes himself was a very vocal critic of HRC. As far as I'm concerned, his credibility has taken a severe hit. He should have said no. The Republicans in Illinois made their own bed by pushing Ryan out of the race. They supported a very corrupt governor. They have made hash of things in their own state. They should not have asked Keyes, and he should have passed.