From NBC's Lauren Appelbaum
Clinton lost her voice pretty badly while at a roundtable in New Haven, CT. She asked for a lozenge and water, and after a minute, she tried to answer a question on health care. She got one short sentence out, and then breathlessly said, "This comes and goes."

A nurse then talked for six minutes, giving Clinton a chance to regain use of her voice. About eight minutes after losing her voice, Clinton began to get her voice back (but still was scratchy).