CNN, MSNBC and CSPAN all said at least Barbara Boxer is on board. I would take it to the bank. If its only her, the debate will only be 5 mins LOL!!
Remember that:
Lincoln Chafee was appointed by the Governor of Rhode Island to fill the unexpired term of his father, the late Senator John H. Chafee, in November 1999. On November 7, 2000, Senator Chafee was elected to a six-year term in the United States Senate.