But it appears to be all in vain. The leader of the Draft Gore committee wrote a letter, published at DailyKos, where she reveals that Al Gore himself is telling them to knock it off:
Dear AFG Steering Committee Members:
We have received a communication from a member of Al Gore's staff discouraging our efforts to put Al Gore's name on any primary ballots. This includes California, New York, Massachusetts, and the write-in effort in New Hampshire, as well as any other states that are working to get him on the ballot. Accordingly, effective immediately, we are recommending that all groups cease their signature collection and related fund-raising activities.
AlGore.org
Well. That's that then. The biggest obstacle between Hillary and the Democratic nomination is now gone for sure. Political junkies will all mark this as a sad day, for now it seems quite clear that nothing interesting will happen on the Democratic side of the race until the convention.
For Al Gore it's apparent that traveling around the world and accepting Nobel prizes is a lot more fun than taking on, in succession, the Clinton and the GOP political machines.

