There’s a poll at Daily Kos on this question:
So is there really a point to having Gravel, in between advocating English as an “official” language and promoting his right-wing flat tax, sit on the debates doing nothing but attack other Democrats?
I voted no.
Partisan presidential debates are not the JV squad, where the policy is “no cut” and everyone gets to play. These debates are a tool for Democrats to advance their message. Democrats should be able to decide who gets to participate in a Democratic debate.
Debates are a great tool for candidates to “break out” from the pack. I don’t think Mike Gravel’s rightwing talking points are going to do him much good, in or out of the debates.