So who's Richard Goodstein? He's the mystery heckler pictured on the front page of a local Connecticut paper today, which reported that Goodstein was among a number of Lieberman backers who badgered Ned Lamont during his visit to a local diner. Goodstein shouted at the candidate, "Are you a Bill Clinton Democrat, or an Al Sharpton Democrat"?

Now Election Central has reached Goodstein on his cellphone, and confirmed that he's the same Richard Goodstein who is a registered lobbyist in D.C. Goodstein is, as the conversation showed, a very ardent Lieberman supporter.

Late Update: Heckler Goodstein has a dirty tricks past.